| <!DOCTYPE html> |
| <meta charset="utf-8"> |
| <title>CSS Overflow: ::scroll-button on root element activation</title> |
| <link rel="help" href="https://drafts.csswg.org/css-overflow-5/#scroll-buttons"> |
| <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-button(block-end) { |
| content: "down"; |
| position: absolute; |
| top: 0; |
| } |
| |
| div { |
| width: 600px; |
| height: 300px; |
| margin-bottom: 20px; |
| background: green; |
| } |
| </style> |
| <div></div> |
| <div></div> |
| <div></div> |
| <script> |
| promise_test(async t => { |
| await new test_driver.Actions() |
| .pointerMove(10, 10) |
| .pointerDown() |
| .pointerUp() |
| .pointerDown() |
| .pointerUp() |
| .send(); |
| assert_equals(window.scrollY, 360); |
| }); |
| </script> |
