In this episode of Syntax, Wes and Scott talk about proposals to CSS including @when, CSS Masonry, CSS Caret, ENV Vars, and Media Query Ranges. Sentry - Sponsor If you want to know what’s happening with your code, track errors and monitor performance with Sentry. Sentry’s Application Monitoring platform helps developers see performance issues, fix errors faster, and optimize their code health. Cut your time on error resolution from hours to minutes. It works with any language and integrates with dozens of other services. Syntax listeners new to Sentry can get two months for free by visiting Sentry.io and using the coupon code TASTYTREAT during sign up. Sanity - Sponsor Sanity.io is a real-time headless CMS with a fully customizable Content Studio built in React. Get a Sanity powered site up and running in minutes at sanity.io/create. Get an awesome supercharged free developer plan on sanity.io/syntax. Show Notes 00:11 Welcome 00:58 Sponsor: Sentry 02:17 Sponsor: Sanity 03:32 CSS @when and @else CSS When and Else @when media(width >= 400px) and media(pointer: fine) and supports(display: flex) { /* A */ } @else supports(caret-color: pink) and supports(background: double-rainbow()) { /* B */ } @else { /* C */ } 05:42 CSS Grid 3 Masonry CSS Grid .grid { display: inline-grid; grid: masonry / repeat(3, 2ch); border: 1px solid; masonry-auto-flow: next; } David Desandro Rachel Andrew 09:00 CSS Caret CSS Caret 10:32 CSS Nesting CSS Nesting Syntax 343 CSS Nesting Postcss-preset-env 13:14 ENV Vars ENV Variables 14:58 Media Query Ranges MDN Media Queries @media (width < env(--small_bp)); @media (100px < width < 1000px); Tweet us your tasty treats Scott’s Instagram LevelUpTutorials Instagram Wes’ Instagram Wes’ Twitter Wes’ Facebook Scott’s Twitter Make sure to include @SyntaxFM in your tweets