| <!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"> |
| <link rel="match" href="flex-column-style-change-triggers-layout-block-start-ref.html"> |
| <meta name="assert" content="Flex items react to change in their flexbox's margin-trim value"> |
| <style> |
| flexbox { |
| display: flex; |
| flex-direction: column; |
| width: min-content; |
| flex-wrap: wrap; |
| border: 1px solid black; |
| } |
| .initial-margin-trim { |
| margin-trim: block-start; |
| } |
| item { |
| display: block; |
| background-color: green; |
| width: 50px; |
| height: 50px; |
| margin-block-start: 10px; |
| } |
| </style> |
| </head> |
| <body> |
| <flexbox class="initial-margin-trim" id="to-no-margin-trim"> |
| <item></item> |
| </flexbox> |
| <flexbox id="to-margin-trim"> |
| <item></item> |
| </flexbox> |
| </body> |
| <script> |
| document.body.offsetHeight; |
| document.getElementById("to-no-margin-trim").style["margin-trim"] = "none"; |
| document.getElementById("to-margin-trim").style["margin-trim"] = "block-start"; |
| </script> |
| </html> |
