All Things { Frontend }

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Yes, I’ve got the keys to the castle, so to speak. And, even after 12 years of working on the site, I’ll admit I’m a little overwhelmed and nervous about that. Read more about CSS-Tricks has a new owner!, opens in new tab

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The journey to create a polyfill for the upcoming CSS random() function that works in all browsers. Read more about Let’s Use the Emergent CSS random() Function in all the Browsers, opens in new tab

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Well, that’s a wrap. No, not a flex-wrap, but rather today marks a new day, week, month, season, aaaand new edition of What’s important (#18), bringing you the best content that developers have produced over the last couple of weeks or so. Read more about What’s !important #18: <geolocation>, Syntax ::highlight()ing, named-feature(), and More, opens in new tab

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The general idea is that we create a Document Picture-in-Picture window (DPIP window), and then we put HTML, CSS, and JavaScript into it. Read more about Creating Web Widgets Using the Document Picture-in-Picture API, opens in new tab

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Syntax highlighting for code blocks without the complicated markup, spans, classes, and bloated JavaScript, courtesy of Uncle Dave. Read more about MicroLighter: Syntax Highlighter, opens in new tab

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Seven and half years after blocks arrived in Core, WordPress introduces a way to build blocks without React annd build pipelines. All you need is PHP. Read more about WordPress PHP-Only Block Registration, opens in new tab

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A newly resolved proposal would allow us to select classes that are a prefix for variations with a wildcard, like .prefix-*. Read more about Resolved: CSS Class Prefix Selector, opens in new tab

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The soon-Baseline sibling-index() function for animations, CSS and the 2026 FIFA World Cup, use cases for the infinity keyword, container “stuck” queries, and more. Read more about What’s !important #16: sibling-index() Animations, Use Cases for the infinity Keyword, Container Stuck Queries, and More, opens in new tab

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Read all about boundary-aware CSS, accessible grid lanes, time-based web designs, full-bleed, the customizable select, and new web platform features. Read more about What’s !important #15: Boundary-aware CSS, Time-based CSS, Full-bleed CSS, and More, opens in new tab

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We recently got the shape() function and corner-shape property. What else could we possibly need as far as making shapes in CSS? Let me tell you: the border-shape property! Read more about Get Ready For the Powerful CSS border-shape Property!, opens in new tab

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I know you’re busy, so for What’s !important #14, I’ll be sprinting through what’s been a stacked couple of weeks despite few browser updates. From CSS Quake to CSS Gap Decorations, this isn’t one to miss! Read more about What’s !important #14: Gap Decorations, random(), <select> field-sizing, and More, opens in new tab

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CSS has always had pseudo-classes that style things based on user interactions. Recent features, however, are blurring the line between what CSS “listens” for and how they are alternatives to what Javascript typically listens for. Read more about The Shifting Line Between CSS States and JavaScript Events, opens in new tab

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Sometimes designers have silly ideas that eventually grow on you. That happened to me with this concept where I had […] Read more about Using Scroll-Driven Animations for Opposing Scroll Directions, opens in new tab

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Let’s poke at the differences between scroll-driven and scroll-triggered animations. Read more about A First Look at Scroll-Triggered Animations, opens in new tab

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There’s a brand new ariaNotify() method — defined by the WAI-ARIA 1.3 Specification — that provides a means of programmatically triggering narration in a screen reader. Read more about The Siren Song of ariaNotify(), opens in new tab

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Props for That creates live props based things CSS can’t normally see in the browser. Things like cursor position, progress values, certain form states, current time, scroll velocity. Read more about Prop For That, opens in new tab

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CSS functions, the alpha() function, Grid Lanes, some things about Dialog that you might not know, CSS Wordle, and more — this is What’s !important right now. Read more about What’s !important #13: @function, alpha(), CSS Wordle, and More, opens in new tab

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Why isn’t my 3D view transition working?! Sunkanmi tackles this frustration and offers an elegant fix for it. Read more about Why Isn’t My 3D View Transition Working?, opens in new tab

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One of those nuances to keep in your back pocket when writing for screen readers. Read more about There’s no need to include ‘navigation’ in your navigation labels, opens in new tab

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There are many ways to create memorable experiences. Sometimes it’s as simple as a form that completes smoothly. But here I’m interested in sharing techniques I reach for when I want a site to feel alive and be remembered. Read more about Creating Memorable Web Experiences: A Modern CSS Toolkit, opens in new tab

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I’ve said one and mean another, and I’ve used one when I needed another. Comparing scroll-driven animations, scroll-triggered animations, container query scroll states, and view transitions for my future self. Read more about Scroll-Driven, Scroll-Triggered, Scroll States, and View Transitions, opens in new tab

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We dive again into CSS Pie Charts! This time, Author Antoine Villepreux delivers semantic and flexible charts without a single line of JS. Read more about Another Stab at the Perfect CSS Pie Chart… Sans JavaScript!, opens in new tab

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In the previous article, I spoke about the why and how to use a Markdown component in Astro. Here, we’re […] Read more about Astro Markdown Component Utility for Any Framework, opens in new tab

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The old (testing in Safari when you don’t have Safari), the new (::checkmark), the in-between (anchor positioning but with HTML), and more. Read more about What’s !important #12: Safari Testing, ::checkmark, HTML Anchor Positioning, and More, opens in new tab

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Until we get something like ::nth-letter, there are still some really cool text effects we can make from existing CSS features, like letter-spacing, ::first-word and ::first-line. Read more about Revealing Text With CSS letter-spacing, opens in new tab

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This isn’t totally about AI. It’s about technical writing in the age of AI. I have some thoughts on this and I hope it’s helpful to you humans reading. Read more about Technical Writing in the AI Age, opens in new tab

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Every view-transition-name on a page must be unique. The problem is that every pseudo-element selector in your CSS targets a specific name, so your animation styles explode into an unmanageable wall of selectors. Read more about Cross-Document View Transitions: Scaling Across Hundreds of Elements, opens in new tab

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Despite the countless number of online resources, it’s easy to get confused when trying to center an element. There are documented solutions, but do you really understand why the code you picked works? Let’s look at the current state of centering options today in 2026. Read more about The State of CSS Centering in 2026, opens in new tab

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It still hits like a ton of bricks to see the steep decline in Stack Overflow questions. What does that mean about learning in our industry? Read more about Stack Overflow: When We Stop Asking, opens in new tab

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This is Part 1 of a two-part series about cross-document view transitions, going over all the gotchas, from ditching the deprecated way to opt into them to a little-known 4-second timeout. Read more about Cross-Document View Transitions: The Gotchas Nobody Mentions, opens in new tab

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If 3D voxel scenes (that you can style), flying focus animations, or new CSS syntaxes sound like your kinda thing, then this issue of What’s !important is definitely for you. Read more about What’s !important #11: 3D Voxel Scenes, Flying Focus, CSS Syntaxes, and More, opens in new tab

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A clever use of CSS to calculate and display a discounted product price by providing a base price and discount amount, featuring modern CSS features like attr(), mod(), and round(). Read more about Computing and Displaying Discounted Prices in CSS, opens in new tab

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One of the best-known examples of CSS state management is the checkbox hack. What if we want a component to be in one of three, four, or seven modes? That is where the Radio State Machine comes in. Read more about The Radio State Machine, opens in new tab

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Craving for a view transition? Sunkanmi has lots of common transitions you can drop into your website right now! Read more about 7 View Transitions Recipes to Try, opens in new tab

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A clever approach for selecting multiple dates on a calendar where the :nth-child()‘s “n of selector” syntax does all the heavy lifting… even in the JavaScript. Read more about Selecting a Date Range in CSS, opens in new tab

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Cascade layers, specificity tricks, smarter ordering, and even some clever selector hacks can often replace !important with something cleaner, more predictable, and far less embarrassing to explain to your future self. Read more about Alternatives to the !important Keyword, opens in new tab

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Chrome 145 introduces the column-height and column-wrap properties, enabling us to wrap the additional content into a new row below, creating a vertical scroll instead of a horizontal scroll. Read more about Looking at New CSS Multi-Column Layout Wrapping Features, opens in new tab

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Creating rectangles, circles, and rounded rectangles is the basic of CSS. Creating more complex CSS shapes such as triangles, hexagons, stars, hearts, etc. is more challenging but still a simple task if we rely on modern features. Read more about Making Complex CSS Shapes Using shape(), opens in new tab

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These are the historical pranks I consider the top 10 most noteworthy, rather than the “best.” You’ll see that some of them crossed the line and/or backfired. Read more about Front-End Fools: Top 10 April Fools’ UI Pranks of All Time, opens in new tab

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A deep sniff of the new CSS Olfactive API, a set of proposed features for immersive user experiences using smell. Read more about Sniffing Out the CSS Olfactive API, opens in new tab

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Short n’ sweet but ever so neat, this issue covers light/dark favicons, @mixin, anchor-interpolated morphing, object-view-box, new web features, and more. Read more about What’s !important #8: Light/Dark Favicons, @mixin, object-view-box, and More, opens in new tab

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That gap between “the form works” and “the business works” is something we don’t really tend to discuss much as front-enders. We focus a great deal on user experience, validation methods, and accessibility, yet we overlook what the data does once it leaves our control Read more about Form Automation Tips for Happier User and Clients, opens in new tab

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Looking at research and experiments that are designed to automatically generate user interfaces based on user preferences. Read more about Generative UI Notes, opens in new tab

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The new CSS corner-shape() property is mathematical, so it’s easily animated. Author Daniel Schwarz pokes at animating the property for interesting UI effects. Read more about Experimenting With Scroll-Driven corner-shape Animations, opens in new tab

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Mat Marquis and Andy Bell have released JavaScript for Everyone, an online course offered exclusively at Piccalilli. This post is an excerpt from the course taken specifically from a chapter all about JavaScript destructuring. Read more about JavaScript for Everyone: Destructuring, opens in new tab

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Tailwind is really great for making layouts and there are many reasons why. Zell Liew looks at four specific examples of common use cases. Read more about 4 Reasons That Make Tailwind Great for Building Layouts, opens in new tab

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For this issue we have random(), folded clip-path corners, anchored container queries, customizable select, scroll-triggered animations, and more. Read more about What’s !important #7: random(), Folded Corners, Anchored Container Queries, and More, opens in new tab

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Let’s go over a few demos using the new customizable <select> feature that may be wild, but also give us a great chance to learn new things in CSS. Read more about Abusing Customizable Selects, opens in new tab

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How we look at the stacking order of our projects, how we choose z-index values, and more importantly, the implications of those choices. Read more about The Value of z-index, opens in new tab

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Sure, we can select the <html> element in CSS with, you know, a simple element selector, html. But what other (trivial and perhaps useless) ways can we do it? Read more about The Different Ways to Select <html> in CSS, opens in new tab

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Choosing between Popover API and Dialog API is difficult because they seem to do the same job, but they don’t! After a bit lots of research, I discovered that the Popover API and Dialog API are wildly different in terms of accessibility and we’ll go over that in this article. Read more about Popover API or Dialog API: Which to Choose?, opens in new tab

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TL;DR: We can center absolute-positioned elements in three lines of CSS. And it works on all browsers! Read more about Yet Another Way to Center an (Absolute) Element, opens in new tab

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Browsers don’t just let you bookmark web pages. You can also bookmark JavaScript, allowing you to do so much more than merely save pages. Read more about A Complete Guide to Bookmarklets, opens in new tab

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Read an explanation of the recent CVE-2026-2441 vulnerability that was labeled a “CSS exploit” that “allowed a remote attacker to execute arbitrary code inside a sandbox via a crafted HTML page.” Read more about An Exploit … in CSS?!, opens in new tab

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Let’s get nuanced in this article and discuss the capabilities of both SVG and raster imaged so that you can make informed decisions in your own work. Read more about Loading Smarter: SVG vs. Raster Loaders in Modern Web Design, opens in new tab

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Danny has several ideas for how we could use :near(), a proposed pseudo-class that detects when the pointer is near an element. Read more about Potentially Coming to a Browser :near() You, opens in new tab

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The distinction between “components” and “utilities” seems clear at first glance, but gets a little blurred when working with them in Tailwind. Read more about Distinguishing “Components” and “Utilities” in Tailwind, opens in new tab

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Interop 2026 is officially a thing and there’s plenty of new (and even old) CSS features that we can look forward to being cross-browser compatible and consistent! Read more about Interop 2026, opens in new tab

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Lee accepts a challenge: arranging text in a spiral that animates as a vortex on scroll… all in CSS. Read more about Spiral Scrollytelling in CSS With sibling-index(), opens in new tab

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This issue of What’s !important is dedicated to our friends in the UK, who are currently experiencing a very miserable 43-day rain streak. Presenting: the five most interesting things to read about CSS from the last couple of weeks. Plus, the latest features from Chrome 145, and anything else you might’ve missed. TL;DR: lots of content, but also lots of rain. Read more about What’s !important #5: Lazy-loading iframes, Repeating corner-shape Backgrounds, and More, opens in new tab

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This is the second part of a small two-part series. In this article, we will explore another type of grid: a pyramidal one. We are still working with hexagon shapes, but a different organization of the elements., while exploring other different shapes. Read more about Making a Responsive Pyramidal Grid With Modern CSS, opens in new tab

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The new contrast-color() function is not fully supported yet. But can we still implement it in a cross-browser friendly way using other new CSS features? Read more about Approximating contrast-color() With Other CSS Features, opens in new tab

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Can we make pie chart that’s semantic, with flexible markup, and avoids using a JavaScript library? Here’s how I tackled it. Read more about Trying to Make the Perfect Pie Chart in CSS, opens in new tab

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CSS-only bar charts are one of those things we’ve tackled a bunch of times in different ways. But how can modern CSS features finally make it not only trivial, but fun? Read more about CSS Bar Charts Using Modern Functions, opens in new tab

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You’d think that publishing a VS Code extension is an easy process, but it’s not. You have to publish your theme in at least two places. Read more about No Hassle Visual Code Theming: Publishing an Extension, opens in new tab

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I’ve always thought that creating a VS Code theme was a lot of work. But lo and behold, it took less than six hours to get it working, then a day or two to polish up my final tweaks. Read more about No-Hassle Visual Studio Code Theming: Building an Extension, opens in new tab

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... Read more about Building an Infinite GSAP Scroll Gallery with Parallax and Flip Transitions, opens in new tab

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... Read more about Building Persistent Page Transitions with WebGPU and Vanilla JavaScript, opens in new tab

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... Read more about WebGPU Gommage Effect: Dissolving MSDF Text into Dust and Petals with Three.js & TSL, opens in new tab

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The new ::search-text pseudo (Chrome 144) matches are yellow while the current target (::search-text:current) is orange, but ::search-text enables us to change that. Read more about Styling ::search-text and Other Highlight-y Pseudo-Elements, opens in new tab

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... Read more about The Never Ending Story: Building a Seamless Infinite Scroll Experience with GSAP & Lenis, opens in new tab

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Stu Robson’s ReliCSS (clever name!) tool can excavate outdated CSS in your codebase that have modern CSS solutions. Read more about ReliCSS, opens in new tab

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... Read more about Building a Scroll-Driven 3D Cube Gallery in Webflow with GSAP, opens in new tab

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Accessibility advice around modals have commonly taught us to trap focus within the modal. Upon further research, it seems like we no longer need to trap focus within the <dialog> (even in modal mode). Read more about There is No Need to Trap Focus on a Dialog Element, opens in new tab

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... Read more about Building Async Page Transitions in Vanilla JavaScript, opens in new tab

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... Read more about Building a Mouse-Following Square Lens Effect with Three.js and GLSL, opens in new tab

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... Read more about From Flat to Spatial: Creating a 3D Product Grid with React Three Fiber, opens in new tab

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A while back, Temani tacked a repeating grid of hexagon shapes. Well, he’s updated it with modern CSS features that result in fewer magic numbers. And it’s impressive! Read more about Responsive Hexagon Grid Using Modern CSS, opens in new tab

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The @custom-media at-rule has landed in Firefox Nightly! I couldn’t find it in the release notes but Adam Argyle’s on […] Read more about Open Props @custom-media Recipes, opens in new tab

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... Read more about Building a Dual-Scene Fluid X-Ray Reveal Effect in Three.js, opens in new tab

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... Read more about Building Ridgeline: Engineering a Real-Time 3D Experience in Webflow, opens in new tab

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... Read more about Creating Scroll-Driven SVG Map Animations with GSAP, opens in new tab

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Semantic HTML does a lot more accessibility work than we usually give it credit for already — and ARIA is simple to abuse when we use it both as a shortcut and as a supplement. Read more about I Learned The First Rule of ARIA the Hard Way, opens in new tab

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... Read more about Animating Responsive Grid Layout Transitions with GSAP Flip, opens in new tab

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... Read more about Made With Gsap: Building a Fun Gravity-Based Mouse Trail, opens in new tab

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... Read more about Interactive Storytelling for the Web: Building Immersive Stories with Timelines, 3D, and Layered Scenes, opens in new tab

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... Read more about Relighting Images with Depth Maps and Three.js, opens in new tab

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... Read more about Creating a Smooth Horizontal Parallax Gallery: From DOM to WebGL, opens in new tab

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... Read more about Building Seamless 3D Transitions with Webflow, GSAP, and Three.js, opens in new tab

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... Read more about Building an Animated Testimonial Hero Using the GSAP Timeline and Dynamic CMS Data, opens in new tab

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... Read more about Reactive Depth: Building a Scroll-Driven 3D Image Tube with React Three Fiber, opens in new tab

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I love me some good web research reports. I’m a sucker for them. HTTP Archive’s Web Almanac is one report […] Read more about HTTP Archive 2025 Web Almanac, opens in new tab

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If you’re reading this, chances are you already have some sort of way that you’re following when we publish new […] Read more about “I Heart CSS” DailyDev Squad, opens in new tab

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... Read more about Building a Scroll-Driven Dual-Wave Text Animation with GSAP, opens in new tab

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The developer community hasn’t wasted any time kicking off 2026 with some really great articles, demos, and insights. Firefox 147 and Chrome 144 also shipped, and while they’re not jam-packed with features, the releases are still pretty exciting for what’s normally a slow time of year, so without further ado, here’s what’s important from the last couple of weeks (or should I say the first couple of weeks, of 2026?)… Read more about What’s !important #3: Popover Context Menus, @scope, New Web Platform Features, and More, opens in new tab

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Super cool new CodePen feature alert! You’ve probably seen a bunch of “interactive” demos that let you changed values on the fly from a UI panel embedded directly in the demo. Read more about Playing With CodePen slideVars, opens in new tab

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... Read more about Exploring the HTML-in-Canvas Proposal, opens in new tab

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... Read more about Creating an Interactive 3D Cluster with Three.js, TSL and Three Start, opens in new tab

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Lee Meyer recently spoke at Web Directions Summit 2025. This is his experience, not only speaking at the event, but experiencing the event through the lens of anxiety and imposter syndrome. Read more about Postcard From Web Directions Dev Summit, 2025, opens in new tab

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... Read more about Exploring Procedural Geometry with Three.js and WebGPU, opens in new tab

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... Read more about SVG Mask Transitions on Scroll with GSAP and ScrollTrigger, opens in new tab

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... Read more about Building an Endless Procedural Snake with Three.js and WebGL, opens in new tab

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... Read more about Building an Interactive Wave Propagation Cube Grid with Three.js, opens in new tab

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... Read more about Building a Scroll-Reactive 3D Gallery with Three.js, Velocity, and Mood-Based Backgrounds, opens in new tab

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... Read more about Building an Infinite Liquid Glass Grid with Three.js, WebGPU, and TSL, opens in new tab

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... Read more about Creating Custom Page Transitions in Astro with Barba.js and GSAP, opens in new tab

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Have you ever struggled to style an element while it’s being dragged? Sunkanmi explains some ways it could become easier in the future. Read more about Future CSS: :drag (and Maybe ::dragged-image?), opens in new tab

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... Read more about Infinite Canvas: Building a Seamless, Pan-Anywhere Image Space, opens in new tab

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... Read more about Building a Scroll-Driven 3D Gallery Using a Blender Camera Path with Three.js and GSAP, opens in new tab

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... Read more about Building a Real-Time 3D Face Mask with MediaPipe, Threlte and Three.js, opens in new tab

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... Read more about How to Create a Pixel-to-Voxel Video Drop Effect with Three.js and Rapier, opens in new tab

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... Read more about Reverse-Engineering Claude AI’s Mascot Animations with SVG and GSAP, opens in new tab

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... Read more about Building an Endless Interactive Glass Xylophone with Three.js, opens in new tab

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... Read more about Creating a Thumbnail Flow Animation with GSAP MotionPath, opens in new tab

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... Read more about Beyond the Luminance Ramp: A Shape-Aware ASCII Renderer in Three.js, opens in new tab

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... Read more about Sticky Grid Scroll: Building a Scroll-Driven Animated Grid, opens in new tab

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... Read more about Building a Scroll-Revealed WebGL Gallery with GSAP, Three.js, Astro and Barba.js, opens in new tab

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... Read more about Breaking the Frame: Building a Real-Time Datamosh Effect with Three.js, opens in new tab

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... Read more about Animating 160,000 Cubes in Three.js to Visualize Dithering, opens in new tab

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2026 is almost upon us. I know we’re all itching to see the clock strike midnight (cue The Final Countdown by Europe), but not without recapping the best CSS-related things that happened over the last two weeks! Read more about What’s !important #2: Conditional View Transitions, CSS/SVG Text Effects, the Best of CSS Bluesky, and More, opens in new tab

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This is the best job I’ve had in my life and it’s only possible because you keep showing up each day to read, learn, share, and discuss all-things-front-end (and a little CSS, of course) with us. Read more about Thank You (2025 Edition), opens in new tab

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The text-decoration-inset property solves a problem that we’ve had since the beginning of the web, which is that text decorations such as underlines extend beyond the first and last characters, resulting in vertical misalignment. Read more about text-decoration-inset is Like Padding for Text Decorations, opens in new tab

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It’s settled! A new CSS display property keyword called grid-lanes will trigger a masonry layout mode. Read more about Masonry Layout is Now grid-lanes, opens in new tab

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Jelte Lagendijk built a Raycast extension for searching CSS-Tricks articles where you simply type and a get a solid set of real-time results. Read more about Search CSS-Tricks Raycast Extension, opens in new tab

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In this article, we follow up the work we did to create responsive rows of circular images in a previous article by arranging the images around a circle with a clean hover effect. Read more about Responsive List of Avatars Using Modern CSS (Part 2), opens in new tab

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The best CSS news from around the web from the last two weeks. In this edition: advent calendars, CSS Wrapped 2025, and the latest Web Platform Updates. Read more about What’s !important #1: Advent Calendars, CSS Wrapped, Web Platform Updates, and More, opens in new tab

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A list of rounded images that slightly overlap each other is a classic web design pattern. The main idea is not complex, but the new thing is the responsive part. that dynamically adjusts the overlap between the images so they fit inside the container. Read more about Responsive List of Avatars Using Modern CSS (Part 1), opens in new tab

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Andy Clarke with a brand-new resource. It generates the sort of fun typography that Andy commonly uses in his own work that’s geared towards cartoon headings. Read more about Toon Title Text Generator, opens in new tab

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It’s not that hard to do! Preethi shows you how it’s really the same old animation you’re used to writing in CSS, only applied on a view timeline instead of a normal timeline. Read more about Creating Scroll-Based Animations in Full view(), opens in new tab

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The Chrome Dev Team recaps the new CSS features that shipped in Google Chrome this past year in one amazingly […] Read more about CSS Wrapped 2025, opens in new tab

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The Chrome team recently prototyped a working solution for fitting text to the width of a container in CSS using a text-grow property. Read more about Fit width text in 1 line of CSS, opens in new tab

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I would like to tell you what I learned from a five-year old child about HTML and CSS. It’s funny how explaining something you do almost naturally teaches you about yourself and what you take for granted. Read more about That Time I Tried Explaining HTML and CSS to My 5-Year Old Niece, opens in new tab

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It’s easy to think of HTML Web Components as a recent feature, but it has roots that go all the way back to 1998. Read more about HTML Web Components Proposal From 1998, opens in new tab

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A good measure makes reading text comfortable, while a bad one makes it more difficult. So, rather than allowing layout to dictate the measure, doesn’t it make more sense for the measure to inform layout decisions? Read more about Getting Creative With “The Measure”, opens in new tab

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Unconvinced of the value of scrollytelling? Alright, skeptic, let’s first warm up with some common use cases for scroll-based styling. Read more about Scrollytelling on Steroids With Scroll-State Queries, opens in new tab

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Bramus: Chrome 144 features a small change to overscroll-behavior: it now also works on non-scrollable scroll containers. While this change might […] Read more about Prevent a page from scrolling while a dialog is open, opens in new tab

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There are many ways to share properties, but what would it look like to inherit and use any parent property value on a child? Read more about On Inheriting and Sharing Property Values, opens in new tab

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Sketch probably didn’t “have” to redesign its UI to line up with macOS Tahoe, but a big part of its appeal is the fact that it feels like it totally belongs to the Mac. Read more about Sketch: A guided tour of Copenhagen, opens in new tab

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Is there really a difference between using :not(:open) and :closed? As always, it depends. Sunkanmi Fafowora explains why :closed is currently not a thing. Read more about Should We Even Have :closed?, opens in new tab

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If we have a ratio that represents the sine, cosine or tangent of an angle, how can we get the original angle? This is where inverse trigonometric functions come in! Read more about The “Most Hated” CSS Feature: asin(), acos(), atan() and atan2(), opens in new tab

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The extremely new framework that caught lots of attention will continue as a personal project. Read more about Quiet UI Came and Went, Quiet as a Mouse, opens in new tab

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Being able to use the range syntax with container style queries — which we can do starting with Chrome 142 — means that we can compare literal numeric values as well as numeric values tokenized by custom properties or the attr() function. Read more about The Range Syntax Has Come to Container Style Queries and if(), opens in new tab

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A few links about headings that I’ve had stored under my top hat. Read more about Headings: Semantics, Fluidity, and Styling — Oh My!, opens in new tab

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Why should you use a semantic <button> instead of a generic <div>? Accessibility, right? By how exactly does it help accessibility? Read more about Explaining the Accessible Benefits of Using Semantic HTML Elements, opens in new tab

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Last time, we discussed that, sadly, according to the State of CSS 2025 survey, trigonometric functions are deemed the “Most Hated” […] Read more about The “Most Hated” CSS Feature: tan(), opens in new tab

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On mobile, people can lose their sense of context and can’t easily tell where a section begins or ends. Good small-screen design can help orient them using a variety of techniques. Read more about Getting Creative With Small Screens, opens in new tab

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Can we use the <details> element as the foundation for a tabbed interface? Why yes, we can! Read more about Pure CSS Tabs With Details, Grid, and Subgrid, opens in new tab

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When we change an element’s intrinsic sizing, its children are affected, too. This is something we can use to our advantage. Read more about CSS Animations That Leverage the Parent-Child Relationship, opens in new tab

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A thorough but approachable lesson on JavaScript expressions excerpted JavaScript For Everyone, a complete online course offered by our friends at Piccalilli. Read more about An Introduction to JavaScript Expressions, opens in new tab

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Honeypots are fields that developers use to prevent spam submissions. They still work in 2025. But you got to set a couple of tricks in place so spambots can’t detect your honeypot field. Read more about Building a Honeypot Field That Works, opens in new tab

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Let’s suppose you have N elements with the same animation that should animate sequentially. Modern CSS makes this easy and it works for any number of items! Read more about Sequential linear() Animation With N Elements, opens in new tab

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What can CSS Masonry discussions teach us about the development of new CSS features? What is the CSSWG’s role? What influence do browsers have? What can learn from the way past features evolved? Read more about Masonry: Watching a CSS Feature Evolve, opens in new tab

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The TL;DR is that stretch does the same thing as declaring 100%, but ignores padding when looking at the available space. Read more about We Completely Missed width/height: stretch, opens in new tab

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One of our favorites, Andy Clarke, on the one thing keeping the CSS contrast-color() function from true glory: For my […] Read more about The thing about contrast-color, opens in new tab

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There are so many creative opportunities for using shape-outside that I’m surprised I see it used so rarely. So, how can you use it to add personality to a design? Here’s how I do it. Read more about Getting Creative With shape-outside, opens in new tab

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Naturally, everything looks like code when I’m staring at a blank canvas. That’s whether the canvas is paper, a screen, some Figma artboard, or what have you. Read more about Same Idea, Different Paint Brush, opens in new tab

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Starting in Chrome 140, we’ll be able to calculate numeric values with mixed data types. Sounds small, but Amit demonstrates how big a deal this is, calling it Computational CSS. Read more about CSS Typed Arithmetic, opens in new tab

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Safari 26 adds:75 new features, 3 deprecations, and 171 other improvements. Here’s all the CSS goodness you’ll want to know about. Read more about Touring New CSS Features in Safari 26, opens in new tab

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John Rhea challenged himself to recreate the fancy button using the new CSS shape() function sprinkled with animation to get things pretty close. Read more about Recreating Gmail’s Google Gemini Animation, opens in new tab

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A set of notes taken from Eric Bailey’s article about the use of inclusive personas and user research. Read more about On inclusive personas and inclusive user research, opens in new tab

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Many of the Sass features we’ve grown to love have made their way into native CSS in some shape or form. So, should we still use Sass? This is how developer Jeff Bridgforth is thinking about it. Read more about Is it Time to Un-Sass?, opens in new tab

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I want to look at practical uses for CSS trigonometric functions. And we’ll start with what may be the most popular functions of the “worst” feature: sin() and cos(). Read more about The “Most Hated” CSS Feature: cos() and sin(), opens in new tab

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When I first started messing around with code, rounded corners required five background images or an image sprite likely created […] Read more about What Can We Actually Do With corner-shape?, opens in new tab

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Stu Robson outlines two ways to compile multiple CSS files when you aren’t relying on Sass for it. Read more about Compiling Multiple CSS Files into One, opens in new tab

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Everyone has a different opinion which is great because it demonstrates the messy, non-linear craft that is thinking like a front-end developer. Read more about What’re Your Top 4 CSS Properties?, opens in new tab

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CSS is a composable language by nature. This composition nature is already built into the cascade. We simply don’t talk about composition as a Big Thing because it’s the nature of the language. Read more about Composition in CSS, opens in new tab

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Color what? Sunkanmi Fafowora explains how an everyday task for CSS can be used to create better colors experiences. Read more about What You Need to Know About CSS Color Interpolation, opens in new tab

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The light-dark() function is currently designed to support just two color schemes. Should it support others? Sunkanmi Fafowora says yes and no. Read more about Should the CSS light-dark() Function Support More Than Light and Dark Values?, opens in new tab

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In this article, author Chris Sabourin walk through how modern CSS features can build a fully functional, interactive elevator that knows where it is, where it’s headed, and how long it’ll take to get there. No JavaScript required. Read more about CSS Elevator: A Pure CSS State Machine With Floor Navigation, opens in new tab

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Here’s an approach for animating products added to a shopping cart that handles an infinite number of items using a variation of the ol’ Checkbox Hack. Read more about A Radio Button Shopping Cart Trick, opens in new tab

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Images in long-form content can (and often should) do more than illustrate. They help set the pace, influence how readers feel, and add character that words alone can’t always convey. Read more about Getting Creative With Images in Long-Form Content, opens in new tab

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In this third and final chapter, we’re stepping into interactivity by adding JavaScript, starting with a simple :hover effect, and ending with a fully responsive bulging text that follows your mouse in real time. Read more about 3D Layered Text: Interactivity and Dynamicism, opens in new tab

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In this chapter, we will explore ways to animate the effect, add transitions, and play with different variations. We will look at how motion can enhance depth, and how subtle tweaks can create a whole new vibe. Read more about 3D Layered Text: Motion and Variations, opens in new tab

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A client asked me to create a bulging text effect. With a bit of cleverness and some advanced CSS, I managed to get a result I’m genuinely proud of, which is covered in this three-part series. Read more about 3D Layered Text: The Basics, opens in new tab

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It’s easy to take URL superpowers for granted, even if you already have these patterns under your belt. Read more about A Few Things About the Anchor Element’s href You Might Not Have Known, opens in new tab

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Short story: Slapping hidden=until-found on an element in HTML enables any hidden content within the element to be findable in the browser with in-page search. Read more about Covering hidden=until-found, opens in new tab

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My brain can’t help but try to make connections between seemingly disparate ideas. And that’s what happened yesterday when I […] Read more about On Accessibility Conformance, Design Systems, and CSS “Base” Units, opens in new tab

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I’ve come to realize that perhaps we need to have a unit between root and relative values. This would bring about a whole new possibility when creating reusable components. Read more about We Might Need Something Between Root and Relative CSS Units for “Base Elements”, opens in new tab

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CSS-Questions is a mini site where you can test your CSS knowledge with over 100 questions. Read more about CSS-Questions, opens in new tab

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Web design veteran Andy Clarke is offering a two-hour workshop all about creating practical and creative page layouts this September 18. Register and save a few bucks with a coupon code. Read more about Stuff & Nonsense Practical Layout Workshop, opens in new tab

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How do you design block quotes and pull quotes to reflect a brand’s visual identity and help tell its story? Here’s how I do it by styling the HTML blockquote element using borders, decorative quote marks, custom shapes, and a few unexpected properties. Read more about Getting Creative With Quotes, opens in new tab