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Cascading Style Sheets (CSS) is a simple language for adding style (e.g., fonts, colors, spacing) to HTML documents. It describes how HTML elements should be displayed.

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Join our latest Frontend Challenge: Comfort Food Edition 🍲

Features a CSS art prompt

Join our latest Frontend Challenge: Comfort Food Edition 🍲

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4 min read
Multi-brand design systems are a massive waste of time

Multi-brand design systems are a massive waste of time

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4 min read
Hard color stops turn conic-gradient() into a triangle machine

Hard color stops turn conic-gradient() into a triangle machine

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3 min read
You reach for Sass to mix colors. `color-mix()` does it natively.

You reach for Sass to mix colors. `color-mix()` does it natively.

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4 min read
Extreme UI/UX — Through the Lens of a Calculator

Extreme UI/UX — Through the Lens of a Calculator

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15 min read
Why Your SVGs Are Bigger Than They Need to Be (And What's Actually Bloating Them)

Why Your SVGs Are Bigger Than They Need to Be (And What's Actually Bloating Them)

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3 min read
Creating a YouTube Web Page Using HTML and CSS

Creating a YouTube Web Page Using HTML and CSS

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2 min read
Building a Portfolio Website With Bootstrap 5: Complete Guide

Building a Portfolio Website With Bootstrap 5: Complete Guide

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12 min read
Choreo: an animation DSL whose programs verify their own rendered motion

Choreo: an animation DSL whose programs verify their own rendered motion

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3 min read
The state of zero-runtime CSS-in-JS, mid-2026

The state of zero-runtime CSS-in-JS, mid-2026

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6 min read
I let an AI write 6 WebGL hero sections — here's the one-CSS-variable reskin trick, and the honest review count

I let an AI write 6 WebGL hero sections — here's the one-CSS-variable reskin trick, and the honest review count

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3 min read
CSS Box model

CSS Box model

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1 min read
Navigation underline animation

Navigation underline animation

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2 min read
The concentric border-radius rule: why nested rounded corners look slightly wrong

The concentric border-radius rule: why nested rounded corners look slightly wrong

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4 min read
I built a free color palette generator that exports to CSS, Tailwind and SCSS

I built a free color palette generator that exports to CSS, Tailwind and SCSS

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1 min read
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