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.

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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

Links

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