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Test Info:
- This WPT test may be referenced by the following Test IDs:
- /css/css-grid/grid-lanes/subgrid/grid-subgridded-to-grid-lanes/track-sizing/column-subgrid-extra-margin-008.html - WPT Dashboard Interop Dashboard
<!DOCTYPE HTML>
<html>
<meta charset="utf-8">
<title>CSS Grid Lanes Test: Subgrid with no grid items accommodates gutter size and padding</title>
<link rel="author" title="Alison Maher" href="mailto:almaher@microsoft.com">
<link rel="match" href="column-subgrid-extra-margin-006-ref.html">
<style>
.wrapper {
width: 116px;
height: 100px;
background: red;
}
.grid-lanes {
display: inline-grid-lanes;
grid-template-columns: repeat(4, auto);
background: red;
}
.subgrid {
display: grid;
grid-template: auto / subgrid;
background: green;
padding: 11px 3px 9px 7px;
}
</style>
</head>
<body>
<p>Test passes if there is a filled green rectangle and <strong>no red</strong>.</p>
<div class="wrapper">
<!--
Grid lanes container width = 116px (4 columns of 29px each).
Same layout and padding as -006, but inner1/inner2 use explicit
positions (grid-column: 1 / span 2 and 3 / span 2) instead of the
auto-placed `span 2` form. Per the WG resolution at
is auto-placed in a grid-lanes container, all subgrids nested
inside it are also treated as auto-placed for margin
accommodation, regardless of any explicit position they specify.
As a result the per-track sizing is identical to -006: every
column grows to the dominant leaf's 29px contribution and the
container ends up at 4 columns * 29px = 116px.
See -006 for how the dominant leaf's 29px is computed.
-->
<div class="grid-lanes">
<div class="subgrid" style="grid-column: span 4; gap: 20px 10px">
<div class="subgrid" style="grid-column: 1 / span 2;">
<div class="subgrid"></div>
<div class="subgrid"></div>
<div class="subgrid"></div>
<div class="subgrid"></div>
<div class="subgrid"></div>
</div>
<div class="subgrid" style="grid-column: 3 / span 2;">
<div class="subgrid"></div>
<div class="subgrid"></div>
<div class="subgrid"></div>
<div class="subgrid"></div>
<div class="subgrid"></div>
</div>
</div>
</div>
</div>
</body>
</html>