CSS

Whether you've got a firm grasp on modern CSS colour capabilities, or you're thinking 'I struggle to understand why I should use modern CSS colours at all', then the first part of this article series, by Kevin Powell, is for you.

If you thought 2024 was packed with amazing new CSS, well, you're right. But so is 2025 and it keeps looking bright. Check out our list of the best stuff with easy-to-reference examples.

There are a ton more @media queries than

A very long treatise on why text backplates were a bad idea. Most of the time.

An overview of what makes modern CSS so awesome.

Random functions in programming languages are amazing.

Like container queries; but for stuck, snapped, and overflowing queries.

Learn about the new CSS if function, which enables a cleaner developer interface for dynamic styles like style queries and media queries.

A row of logos that animate forever perfectly and don't have any duplicated HTML or JavaScript at all is quite a trick. Thanks modern CSS!

scroll-target-group is a new CSS feature that lets you create scroll-spy table of contents with basically 2 lines of CSS.

Explore how the if() function works, see practical examples, and compare it to existing CSS conditional techniques.

Taking another look at Time.com hero section. Can we do better?

Anchor positioning allows you to place an element on the page based on where another element is.

The whole point of auto-fit and auto-fill is that you aren't saying how many columns to use. But if you knew how many the browser chose, you can make nice design decisions.

The many ways to juggle line length when working with text... including two proposed properties that could make it easier in the future.

The definitive guide to using public CSS Custom properties to configure web components externally. Surely no one will ever write about this topic again.

The CSS corner-shape property (very new! only in Chrome Canary!) is useful in basic use cases, for advanced shape making, and the superellipse() function is *extra* powerful.

There's a newish CSS feature called hyphens that specifies how you want words to be hyphenated when the text wraps. But if you use it, you're going to need to make sure you're also correctly identifying the language. And to understand why that matters, we need to talk about words and syllables.

subgrid in CSS is really handy for getting a nice level of design detail in place, especially in terms of maintaining a nice reading line, as Andy shows in this article.

Styling the space between layout items — the gap — has typically required some clever workarounds. But a new CSS feature changes all that with just a few simple CSS properties that make it easy, yet also flexible, to display styled separators between your layout items.

Heydon Pickering takes a fresh look the Every Layout Sidebar layout, 6 years on, to see if modern CSS selectors can improve it.

If you’ve ever tried to implement consistent shadows across multiple platforms and design tools, you may have noticed that they don’t look the same. Thankfully, it is possible to get them all to match.

CSS can be unpredictable — and specificity is often the culprit. Victor Ayomipo breaks down how and why your styles might not behave as expected, and why understanding specificity is better than relying on `!important`.

Have you ever wished you could write simple CSS to declare a color, and then have the browser figure out whether black or white should be paired with that color?

If you write a lot of CSS, you are familiar with those moments when you aren’t quite sure how to accomplish what you want to accomplish.

– The personal website of Sara Soueidan, inclusive design engineer

Tips and tricks on utilizing the CSS backdrop-filter property to style user interfaces. You’ll learn how to layer backdrop filters among multiple elements, and integrate them with other CSS graphical effects to create elaborate designs.

Exploring the modern attr() in CSS