| <!DOCTYPE html> |
| <html> |
| <head> |
| <link rel="author" href="mailto:[email protected]"> |
| <link rel="help" href="https://drafts.csswg.org/css-box-4/#margin-trim-flex"> |
| <meta name="assert" content="Make sure margins are no longer trimmed when margin-trim is changed to none on the flexbox"> |
| <style> |
| flexbox { |
| display: flex; |
| flex-direction: column; |
| width: min-content; |
| margin-trim: block-start; |
| } |
| item { |
| display: block; |
| background-color: green; |
| width: 50px; |
| height: 50px; |
| margin-block-start: 10px; |
| } |
| </style> |
| <script src="/resources/testharness.js"></script> |
| <script src="/resources/testharnessreport.js"></script> |
| <script src="/resources/check-layout-th.js"></script> |
| </head> |
| <body> |
| <div id="target"> |
| <flexbox> |
| <item data-expected-margin-top="10" data-offset-y="18"></item> |
| <item data-expected-margin-top="10" data-offset-y="78"></item> |
| </flexbox> |
| </div> |
| <script> |
| // Force the first layout to trim margins, set margin-trim to none, |
| // force a second layout, and then check to see if the margins were added back |
| document.body.offsetHeight; |
| document.querySelector("flexbox").style["margin-trim"] = "none"; |
| document.body.offsetHeight; |
| checkLayout("flexbox > item"); |
| </script> |
| </body> |
| </html> |
