16abbd78e7
Add scripts/import_wpt_reftests.py to sparse-clone the upstream WPT repo and bulk-import qualifying CSS reftests (no JS, no external resources) as known_fail entries. 23 tests already pass and are promoted. The import script is idempotent and exposed via `just import-wpt`. CI now prints the WPT summary (pass=36 known_fail=2877 skip=1) on every run. Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
45 lines
1.6 KiB
HTML
45 lines
1.6 KiB
HTML
<!DOCTYPE html>
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<meta charset="utf-8">
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<title>CSS Test: Abspos table centered in both axes with auto margins</title>
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<link rel="author" title="Daniel Holbert" href="mailto:dholbert@mozilla.com">
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<link rel="help" href="https://bugzilla.mozilla.org/show_bug.cgi?id=1480636">
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<link rel="help" href="https://www.w3.org/TR/CSS21/visudet.html#abs-non-replaced-width">
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<meta name="assert" content="An absolutely-positioned fixed-size table should resolve auto margins the same way that a similarly-sized block would.">
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<link rel="match" href="../reference/ref-filled-green-100px-square.xht">
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<style>
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.container {
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/* I've chosen this position/size so that a 100px child element that's
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centered within us will be placed at our "normal" position (where our
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top-left corner would be, in the absence of relative positioning), so we
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can use the simple filled-green-100px-square reference case. */
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position: relative;
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left: -30px;
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top: -30px;
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width: 160px;
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height: 160px;
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}
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.target {
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display: block;
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background: red;
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}
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.table {
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display: table;
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background: green;
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}
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.centered {
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position: absolute;
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width: 100px;
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height: 100px;
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inset: 0;
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margin: auto; /* use auto margins for centering */
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}
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</style>
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<p>Test passes if there is a filled green square and <strong>no red</strong>.</p>
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<div class="container">
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<!-- We're essentially just comparing the position of the block ("target")
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and the table. We expect them to be placed at precisely the same spot,
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so no red should be visible. -->
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<div class="centered target"></div>
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<div class="centered table"></div>
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</div>
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