| <!DOCTYPE html> |
| <title>@property: viewport units in initial value (dynamic)</title> |
| <link rel="help" href="https://drafts.css-houdini.org/css-properties-values-api-1/#initial-value-descriptor" /> |
| <script src="/resources/testharness.js"></script> |
| <script src="/resources/testharnessreport.js"></script> |
| <style> |
| iframe { |
| width: 400px; |
| height: 200px; |
| } |
| </style> |
| <iframe id=iframe srcdoc=" |
| <style> |
| @property --10vw { syntax: '<length>'; inherits: true; initial-value: 10vw} |
| @property --10vh { syntax: '<length>'; inherits: true; initial-value: 10vh} |
| div { |
| background: green; |
| width: var(--10vw); |
| height: var(--10vh); |
| } |
| </style> |
| <div style='width:10vw'></div> |
| "></iframe> |
| <script> |
| iframe.offsetTop; |
| |
| function waitForLoad(w) { |
| return new Promise(resolve => w.addEventListener('load', resolve)); |
| } |
| |
| promise_test(async (t) => { |
| await waitForLoad(window); |
| let element = iframe.contentDocument.querySelector('div'); |
| assert_equals(getComputedStyle(element).getPropertyValue('--10vw'), '40px'); |
| assert_equals(getComputedStyle(element).getPropertyValue('--10vh'), '20px'); |
| |
| iframe.style.width = '100px'; |
| assert_equals(getComputedStyle(element).getPropertyValue('--10vw'), '10px'); |
| assert_equals(getComputedStyle(element).getPropertyValue('--10vh'), '20px'); |
| }); |
| </script> |
