| <!DOCTYPE html> |
| <title>CSS Test: resolve top percentage value against proper box</title> |
| <link rel="help" href="https://github.com/w3c/csswg-drafts/issues/3115" /> |
| <link rel="help" href="https://drafts.csswg.org/css-position/#sticky-pos" /> |
| <link rel="help" href="https://drafts.csswg.org/cssom/#resolved-values" /> |
| <meta name="assert" content="Test that the sticky percentage insets are |
| resolved against the right ancestor, i.e. the nearest scrollport." /> |
| |
| <script src="/resources/testharness.js"></script> |
| <script src="/resources/testharnessreport.js"></script> |
| |
| <div style="height: 500px; background: purple; overflow: hidden;"> |
| <div style="height: 400px; background: yellow;"> |
| <div id="target" style="height: 100px; position: sticky; left: 0; top: 50%; background: blue;"> |
| </div> |
| </div> |
| </div> |
| <script> |
| test(() => { |
| assert_equals(getComputedStyle(target).top, '250px'); |
| }, "Sticky element's top property percentage value should be resolved against the div with overflow: hidden"); |
| </script> |
