The truth about CSS selector performance

Geez, leave it to Patrick Brosset to talk CSS performance in the most approachable and practical way possible. Not that CSS is always what’s gunking up the speed, or even the lowest hanging fruit when it comes to improving performance. But if you’re looking for gains on the CSS side of things, Patrick has a […]

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The Double Emphasis Thing

I used to have this boss who loved, loved, loved, loved to emphasize words. This was way back before we used a WYSIWYG editors and I’d have to handcode that crap. <p> I used to have this boss who <em>loved</em>, <strong>loved</strong>, <strong><em>loved</em></strong>, <strong><em><u>loved</u></em></strong> to emphasize words. </p> (Let’s not go into the colors he used […]

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A Fancy Hover Effect For Your Avatar

Do you know that kind of effect where someone’s head is poking through a circle or hole? The famous Porky Pig animation where he waves goodbye while popping out of a series of red rings is the perfect example, and Kilian Valkhof actually re-created that here on CSS-Tricks a while back. I have a similar […]

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Caching Data in SvelteKit

My previous post was a broad overview of SvelteKit where we saw what a great tool it is for web development. This post will fork off what we did there and dive into every developer’s favorite topic: caching. So, be sure to give my last post a read if you haven’t already. The code for […]

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AR, VR, and a Model for 3D in HTML

Tucked down somewhere in the Safari Technology Preview 161 release notes is a seemingly innocous line about support for a new HTML element and attribute: Added support for <model src> and honor <source type> attributes (257518@main) Anytime I see mention of some element I don’t recognize, my mind goes straight to Huh! New to me, but probably old news […]

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Animating CSS Grid (How To + Examples)

I’m pleased to shine a light on the fact that the CSS grid-template-rows and grid-template-columns properties are now animatable in all major web browsers! Well, CSS Grid has technically supported animations for a long time, as it’s baked right into the CSS Grid Layout Module Level 1 spec. But animating these grid properties only recently […]

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Getting Started With SvelteKit

SvelteKit is the latest of what I’d call next-gen application frameworks. It, of course, scaffolds an application for you, with the file-based routing, deployment, and server-side rendering that Next has done forever. But SvelteKit also supports nested layouts, server mutations that sync up the data on your page, and some other niceties we’ll get into. […]

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More Real-World Uses for :has()

The :has() pseudo-class is, hands-down, my favorite new CSS feature. I know it is for many of you as well, at least those of you who took the State of CSS survey. The ability to write selectors upside down gives us more superpowers I’d never thought possible. I say “more superpowers” because there have already […]

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Solved With :has(): Vertical Spacing in Long-Form Text

If you’ve ever worked on sites with lots of long-form text — especially CMS sites where people can enter screeds of text in a WYSIWYG editor — you’ve likely had to write CSS to manage the vertical spacing between different typographic elements, like headings, paragraphs, lists and so on. It’s surprisingly tricky to get this […]

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