What is this
A reference for the CSS renaissance
Container queries, scroll-driven animations, :has(), OKLCH colors, anchor positioning, view transitions — CSS gained more capability between 2023 and 2026 than in the previous decade combined.
cssShowcase exists to make those features tangible: every snippet is interactive, every article explains the "why" not just the "what", and every page ships a copyable LLM prompt so you can translate what you see into your own projects instantly.
The best way to learn a CSS feature is to see it working, understand its mechanism, then use it yourself. We give you all three in one place.
— The cssShowcase philosophyWhat you get
Every page does four things
Live demo
Every snippet runs in the browser right on the page. No CodePen embed, no iframe — real CSS, real rendering.
One-click copy
Hit Copy CSS and the exact code is on your clipboard. Paste it. It works. That's the deal.
LLM-ready prompt
For vibe coders: a structured prompt with role, constraints, and edge cases — copy it to your AI tool of choice and get working code back.
Deep-dive article
Why this matters, how the mechanism works, and what to watch for on accessibility and performance.
Built with
This site is its own demo
cssShowcase practices what it preaches. Every technique showcased in the snippets and articles is used somewhere on this site — often on this very page.
Scroll down to watch the progress bar fill. Notice the cards lifting on hover. See the sections fade up as they enter the viewport. All CSS. Zero JavaScript for any of it.
The approach
Performance-first, always
No framework. No build step. No bundler. The entire site is static HTML, one CSS file, and 20 lines of JavaScript for clipboard copy. It loads in under a second on a slow connection.
Animations use transform and opacity — compositor-only properties. Colors are in oklch() for display-P3 gamut on supported screens. Every interactive element is keyboard accessible. Dark mode is native, not a class toggle.
If a CSS feature isn't in Baseline Widely Available, it gets an "Experimental" badge and a @supports fallback. We don't ship surprises.
Start exploring
10 widgets. 10 articles. All the CSS you need to build better, faster, and with less JavaScript.