| <!DOCTYPE html> |
| <title>Nested size/style @container-dependent elements respond to container size changes</title> |
| <link rel="help" href="https://drafts.csswg.org/css-conditional-5/#size-container"> |
| <script src="/resources/testharness.js"></script> |
| <script src="/resources/testharnessreport.js"></script> |
| <script src="support/cq-testcommon.js"></script> |
| <style> |
| #container { |
| container-type: size; |
| width: 1000px; |
| } |
| #container.narrow { |
| width: 600px; |
| } |
| #target { |
| color: red; |
| } |
| @container (width < 800px) { |
| @container style(--foo: bar) { |
| #target { color: green; } |
| } |
| } |
| </style> |
| <div id="container"> |
| <div style="--foo: bar"> |
| <div id="target">Green?</div> |
| </div> |
| </div> |
| <script> |
| setup(() => { |
| assert_implements_size_container_queries(); |
| assert_implements_style_container_queries(); |
| }); |
| |
| test(() => { |
| assert_equals(getComputedStyle(target).color, "rgb(255, 0, 0)"); |
| }, "Initially red"); |
| |
| test(() => { |
| container.className = "narrow"; |
| assert_equals(getComputedStyle(target).color, "rgb(0, 128, 0)"); |
| }, "Green after reducing width"); |
| </script> |
