Never Use CSS Media Queries Again! | Master CSS Container Queries

Описание: Build a smarter theme system in CSS — without a single line of JavaScript.
In this video, I’ll show you how to use the brand-new @container style() and attr() functions to dynamically theme your UI components.
We’ll build 3 responsive product cards — Light, Dark, and Retro — and switch themes only using CSS. This is perfect for design systems, CMS themes, or when you don’t have control over HTML classes or JS logic.

What you’ll learn:
How @container style(--theme: value) works in real projects.
How to use attr() in custom properties to connect data-theme values from HTML.
Responsive layout and card theming using container-based CSS logic.
A complete, scalable way to create multi-theme UI components with no JavaScript.

Real-World Use Case:
Need to apply different themes to sections without changing class names or HTML? This method reads the theme directly from the parent or body — ideal for CMS, design systems, or component libraries.

Try changing data-theme in your HTML and watch the cards update instantly.
This is the future of CSS-powered theming.

Tools Used:
HTML, CSS, @container queries, attr() function, custom properties (CSS variables).

Related Tutorial:
   • Master CSS attr() - The Future of Web Design  
   • CSS All You Need to Know  

Drop your questions in the comments – and let me know which theme is your favorite!

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CHAPTERS:
00:00 — Hook & problem framing.
01:02 — Container style queries + attr(): the core idea.
01:42 — Cards, scoped tokens, and per-card themes.
03:46 — body[data-theme] wired to CSS variable with attr().
04:45 — Containers drive the theme; cards auto-adapt.
06:52 — Media queries set theme; containers do the styling.
08:34 — Support & fallbacks.
09:38 — Wrap-up & CTA.

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The Secret to Truly Responsive UIs: Master CSS Container Queries & Themes (No JavaScript!), Never Use CSS Media Queries Again!

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