Modern CSS Resources
Curated links to specifications, tools, learning materials, and community sites. Everything you need to stay current with CSS.
Specifications & Standards
W3C CSS Working Group
The official home of CSS specifications. Drafts, recommendations, and working group news.
w3.org/Style/CSS CSS Snapshot 2025
The latest official snapshot of stable CSS specifications ready for implementation.
w3.org/TR/css-2025 CSSWG Editor's Drafts
Bleeding-edge CSS specifications. See what's being designed before it ships in browsers.
drafts.csswg.org Browser Support
Can I Use
Check browser support for any CSS property. The definitive compatibility reference.
caniuse.com Baseline Dashboard
Track which features are available across all major browsers.
web.dev/baseline Chrome Platform Status
Feature tracking for Chrome and Chromium. See what's shipping, in development, or planned.
chromestatus.com Web Status
Baseline status tracking for web platform features.
webstatus.dev Interop 2026
All major browsers collaborating to fix cross-browser CSS inconsistencies in 2026.
wpt.fyi/interop-2026 Learning
web.dev Learn CSS
A comprehensive, free course covering modern CSS from fundamentals to advanced techniques.
web.dev/learn/css MDN CSS Reference
The most complete CSS property reference. Detailed docs, examples, and browser compat tables.
developer.mozilla.org CSS-Tricks Almanac
An encyclopedic guide to every CSS property and selector with practical examples.
css-tricks.com/almanac Josh Comeau — CSS
Deep-dive articles on CSS fundamentals and modern techniques with interactive demos.
joshwcomeau.com/css Tools
CodePen
The best online playground for CSS experiments. Share snippets and explore community demos.
codepen.io CSS Grid Course
Free 25-video course on CSS Grid by Wes Bos.
cssgrid.io Grid Garden
Learn CSS Grid through a fun interactive game.
cssgridgarden.com Flexbox Froggy
Learn CSS Flexbox by helping frogs get to their lily pads.
flexboxfroggy.com