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/CSSCSS Snapshot 2025
The latest official snapshot of stable CSS specifications ready for implementation.
w3.org/TR/css-2025CSSWG Editor's Drafts
Bleeding-edge CSS specifications. See what's being designed before it ships in browsers.
drafts.csswg.orgBrowser Support
Can I Use
Check browser support for any CSS property. The definitive compatibility reference.
caniuse.comBaseline Dashboard
Track which features are available across all major browsers.
web.dev/baselineChrome Platform Status
Feature tracking for Chrome and Chromium. See what's shipping, in development, or planned.
chromestatus.comWeb Status
Baseline status tracking for web platform features.
webstatus.devInterop 2026
All major browsers collaborating to fix cross-browser CSS inconsistencies in 2026.
wpt.fyi/interop-2026Interop 2027 proposals
Call for Interop 2027 focus areas. Submit web platform gaps through September 23, 2026.
github.com/web-platform-tests/interopLearning
web.dev Learn CSS
A comprehensive, free course covering modern CSS from fundamentals to advanced techniques.
web.dev/learn/cssMDN CSS Reference
The most complete CSS property reference. Detailed docs, examples, and browser compat tables.
developer.mozilla.orgCSS-Tricks Almanac
An encyclopedic guide to every CSS property and selector with practical examples.
css-tricks.com/almanacJosh Comeau — CSS
Deep-dive articles on CSS fundamentals and modern techniques with interactive demos.
joshwcomeau.com/cssTools
CodePen
The best online playground for CSS experiments. Share snippets and explore community demos.
codepen.ioCSS Grid Course
Free 25-video course on CSS Grid by Wes Bos.
cssgrid.ioGrid Garden
Learn CSS Grid through a fun interactive game.
cssgridgarden.comFlexbox Froggy
Learn CSS Flexbox by helping frogs get to their lily pads.
flexboxfroggy.comFrontend Snippets
Free copy-paste UI components in HTML, CSS, SCSS, and JavaScript. Cards, buttons, loaders, toggles, navbars, and footers.
frontend-snippets.com