The truth about CSS selector performance

I spend a lot of time in DevTools, and I’m sure you do too. Sometimes I even bounce between them, especially when I’m debugging cross-browser issues. DevTools is a lot like browsers themselves — not all of the features in …

Doing a quick search here on CSS-Tricks shows just how many different ways there are to approach calendars. Some show how CSS Grid can create the layout efficiently. Some attempt to bring actual data into the mix. Some …

You know what it’s like to pick up a new language or framework. Sometimes there’s great documentation to help you find your way through it. But even the best documentation doesn’t cover absolutely everything. And when you work with something …

CSS trigonometry functions are here! Well, they are if you’re using the latest versions of Firefox and Safari, that is. Having this sort of mathematical power in CSS opens up a whole bunch of possibilities. In this tutorial, I thought …

Fonts are a defining characteristic of the design of any site. That includes WordPress themes, where it’s common for theme developers to integrate a service like Google Fonts into the WordPress Customizer settings for a “classic” PHP-based theme. That hasn’t …

I was reading “Creative List Styling” on Google’s web.dev blog and noticed something odd in one of the code examples in the ::marker section of the article. The built-in list markers are bullets, ordinal numbers, and letters. The ::marker pseudo-element …

We’re fans of Custom Elements around here. Their design makes them particularly amenable to lazy loading, which can be a boon for performance.

Inspired by a colleague’s experiments, I recently set about writing a simple auto-loader: Whenever a custom …

It’s a question I hear asked quite often: Is it possible to create shadows from gradients instead of solid colors? There is no specific CSS property that does this (believe me, I’ve looked) and any blog post you find about …

Every now and then, a one blog post is published and it spurs a reaction or response in others that are, in turn, published as blogs posts, and a theme starts to emerge. That’s what happened this past week and …

We often think of background images as texture or something that provides contrast for legible content — in other words, not really content. If it was content, you’d probably reach for an <img> anyway, accessibility and whatnot.

But there are …