Hasty Treat - Container Queries Are Here

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-query-list> { <stylesheet> } */
@container (inline-size > 45em) {
  .media-object {
    grid-template: "img content" auto / auto 1fr;
  }
}

18:49 - How to try them today

1. Download and/or update Chrome Canary
2. Go to chrome://flags
3. Search and enable "CSS Container Queries"
4. 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