| <!doctype html> | |
| <title>Invalidation works properly across siblings on different slots</title> | |
| <style> | |
| .x { display: table-header-group; } | |
| .x + * { color: green } | |
| </style> | |
| <details open=""> | |
| <summary class="x" id="a">Main summary</summary> | |
| <summary>Should be green</summary> | |
| </details> |