In this Hasty Treat, Scott and Wes talk about CSS container queries, what they are and how to use them. 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. LogRocket - Sponsor LogRocket lets you replay what users do on your site, helping you reproduce bugs and fix issues faster. It’s an exception tracker, a session re-player and a performance monitor. Get 14 days free at logrocket.com/syntax. Show Notes 07:22 - Why? Container queries are media queries for components (e.g. they are based on the element’s size, not the browser). This is in line with how we write components. It will change the way we write CSS. 08:49 - The Syntax Containers need to be defined as containers via containment context .container { contain: size layout; } New contain value: .inline-container { contain: inline-size; } This is the same as the logical properties. Assuming you read LTR, or RTL: size - width and height inline-size = width block-size = height /* @container { } */ @container (inline-size > 45em) { .media-object { grid-template: "img content" auto / auto 1fr; } } 18:49 - How to try them today Download and/or update Chrome Canary Go to chrome://flags Search and enable “CSS Container Queries” Restart the browser 19:27 - Demos Need Chrome Canary + Flag https://codepen.io/collection/XQrgJo https://codepen.io/una/pen/LYbvKpK?editors=1100 Links Miriam Suzanne Susy Miriam’s CSS Sandbox https://css.oddbird.net/rwd/query/explainer/ Canary @addyosmani The CSS Podcast @jon_neal 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