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- This WPT test may be referenced by the following Test IDs:
- /css/css-grid/placement/grid-placement-huge-negative-indexes-001.html - WPT Dashboard Interop Dashboard
<!DOCTYPE html>
<meta charset="utf-8">
<meta name="assert" content="Items placed with negative line numbers far outside the explicit grid (before its start, after its end, or both) create implicit tracks and are sized to the resulting grid area.">
<link rel="stylesheet" href="/css/support/grid.css">
<link rel="stylesheet" href="/css/support/alignment.css">
<link rel="stylesheet" href="/fonts/ahem.css">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="/resources/check-layout-th.js"></script>
<style>
.negativeStartBeforePositionIndexes {
grid-row: -10 / 1;
grid-column: -28 / 1;
}
.negativeEndAfterPositionIndexes {
grid-row: 1 / -17;
grid-column: 1 / -80;
}
.negativePositionIndexes {
grid-row: -50 / -3;
grid-column: -8 / -54;
}
</style>
<body onload="document.fonts.ready.then(() => { checkLayout('.grid'); })">
<div>This test checks that grid items with large negative line numbers are placed and sized correctly.</div>
<div class="unconstrainedContainer">
<div class="grid justifyContentStart">
<div class="sizedToGridArea negativeStartBeforePositionIndexes" data-expected-width="120" data-expected-height="10">XXXXX XXXXXX</div>
</div>
</div>
<div class="unconstrainedContainer">
<div class="grid justifyContentStart">
<div class="sizedToGridArea negativeEndAfterPositionIndexes" data-expected-width="120" data-expected-height="10">XXXXX XXXXXX</div>
</div>
</div>
<div class="unconstrainedContainer">
<div class="grid justifyContentStart">
<div class="sizedToGridArea negativePositionIndexes" data-expected-width="120" data-expected-height="10">XXXXX XXXXXX</div>
</div>
</div>
</body>