| <!DOCTYPE html> |
| <meta charset="utf-8"> |
| <title>CSS Overflow: ::scroll-marker with ::scroll-marker-group on root element scroll tracking</title> |
| <link rel="help" href="https://drafts.csswg.org/css-overflow-5/#scroll-marker-pseudo"> |
| <script src="/resources/testharness.js"></script> |
| <script src="/resources/testharnessreport.js"></script> |
| <script src="/resources/testdriver.js"></script> |
| <script src="/resources/testdriver-actions.js"></script> |
| <script src="/resources/testdriver-vendor.js"></script> |
| <style> |
| body { |
| margin: 0; |
| } |
| |
| :root { |
| scroll-marker-group: before; |
| } |
| |
| :root::scroll-marker-group { |
| border: 3px solid black; |
| padding: 5px; |
| height: 20px; |
| display: block; |
| position: fixed; |
| top: 0; |
| } |
| |
| div { |
| width: 600px; |
| height: 300px; |
| margin-bottom: 20px; |
| background: blue; |
| } |
| |
| div:first-of-type { |
| margin-top: 40px; |
| } |
| |
| div::scroll-marker { |
| content: ""; |
| width: 20px; |
| height: 20px; |
| background-color: red; |
| display: inline-block; |
| margin-right: 4px; |
| } |
| |
| div::scroll-marker:target-current { |
| background-color: green; |
| } |
| |
| div:last-of-type::scroll-marker { |
| margin-right: 0px; |
| } |
| </style> |
| <div></div> |
| <div></div> |
| <div id="target"></div> |
| <script> |
| promise_test(async t => { |
| await new test_driver.Actions() |
| .pointerMove(65, 20) |
| .pointerDown() |
| .pointerUp() |
| .pointerDown() |
| .pointerUp() |
| .send(); |
| assert_equals(window.scrollY, 380); |
| assert_equals(getComputedStyle(target, "::scroll-marker").backgroundColor, "rgb(0, 128, 0)"); |
| }); |
| </script> |
