| <!doctype html> |
| <title>CSS Container Queries Test: Canvas as size container for focusable child</title> |
| <link rel="help" href="https://drafts.csswg.org/css-contain-3/#size-container"> |
| <link rel="match" href="/css/reference/ref-filled-green-100px-square-only.html"> |
| <style> |
| @supports (container-type: size) { |
| canvas:focus-within { |
| border: 50px solid green; |
| } |
| canvas { |
| display: block; |
| width: 100px; |
| height: 100px; |
| box-sizing: border-box; |
| container-type: size; |
| } |
| } |
| </style> |
| <p>Test passes if there is a filled green square.</p> |
| <canvas> |
| <div id="target" tabIndex="1"></div> |
| </canvas> |
| <script> |
| target.focus(); |
| </script> |
