0863153acd
Add parent-first-child top and parent-last-child bottom margin collapsing using a two-level approach (Level A shifts child inside parent, Level B adjusts grandparent for effective collapsed margin). Fix pre-existing bug in shift_subtree_x that incorrectly skipped absolute/fixed children. Extract shared MARGIN_EPSILON constant, add 9 unit tests and 4 golden tests (209-212), promote 31 WPT tests to pass. Includes code review fixes: pub(crate) visibility for is_root_element, known-limitation docs, and inline-content shift test coverage. Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
18 lines
378 B
HTML
18 lines
378 B
HTML
<!DOCTYPE html>
|
|
<html>
|
|
<head>
|
|
<style>
|
|
body { margin: 0; }
|
|
.parent { margin-bottom: 20px; background: lightblue; }
|
|
.child { height: 50px; margin-bottom: 30px; background: lightgreen; }
|
|
.sibling { height: 50px; margin-top: 10px; background: lightyellow; }
|
|
</style>
|
|
</head>
|
|
<body>
|
|
<div class="parent">
|
|
<div class="child"></div>
|
|
</div>
|
|
<div class="sibling"></div>
|
|
</body>
|
|
</html>
|