In CSS, we can create “stacking contexts” where elements are visually placed one on top of the next in a three-dimensional sense that creates the perception of depth. Stacking contexts are incredibly useful, but they’re also widely misunderstood and often mistakenly created, leading to a slew of layout issues that can be tricky to solve.
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CSS relative colour values are now widely supported. In this article, pioneering author and web designer Andy Clarke shares practical techniques for using them to theme and animate SVG graphics.
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CSS Wrapped 2025 is out! We’re entering a world where CSS can increasingly handle logic, state, and complex interactions once reserved for JavaScript. Here is an unpacking of the standout highlights and how they connect to the bigger evolution of modern CSS.
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CSS Masonry is almost here! Patrick Brosset takes a deep dive into what this long-awaited feature means for web developers and how you could make use of it in your own work.
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Animations can be one of the most joyful parts of building interfaces, but without structure, they can also become one of the biggest sources of frustration. By consolidating and standardizing keyframes, you take something that is usually messy and hard to manage and turn it into a clear, predictable system.
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Debugging controllers can be a real pain. Here’s a deep dive into how CSS helps clean it up and how to build a reusable visual debugger for your own projects.
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There are many existing web features and technologies in the wild that you may never touch directly in your day-to-day work. Perhaps you’re fairly new to web development and are simply unaware of them because you’re steeped in the abstraction of a specific framework that doesn’t require you to know it deeply, or even at all. Bryan Rasmussen looks specifically at XPath and demonstrates how it can be used alongside CSS to query elements.
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SVG is one of those web technologies that’s both elegant and, at times, infuriating. In this article, pioneering author and web designer Andy Clarke explains his technique for animating SVG elements that are hidden in the Shadow DOM.
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SVGs, they scale, yes, but how else can you make them adapt even better to several screen sizes? Web design pioneer Andy Clarke explains how he builds what he calls “adaptive SVGs” using <symbol>, <use>, and CSS Media Queries.
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