Blitz - WPT: column-subgrid-extra-margin-001.html

wpt / css / css-grid / grid-lanes / subgrid / grid-subgridded-to-grid-lanes / track-sizing / column-subgrid-extra-margin-001.html

/css/css-grid/grid-lanes/subgrid/grid-subgridded-to-grid-lanes/track-sizing/column-subgrid-extra-margin-001.html

<!DOCTYPE HTML>
<html>
<meta charset="utf-8">
<title>CSS Grid Lanes Test: subgrid extra margin enlarges edge track beyond item size (columns)</title>
<link rel="author" title="Alison Maher" href="mailto:almaher@microsoft.com">
<link rel="help" href="https://drafts.csswg.org/css-grid-3/#subgrids">
<link rel="match" href="column-subgrid-extra-margin-001-ref.html">
<style>
.grid-lanes {
  display: inline grid-lanes;
  grid-template-columns: repeat(4, auto);
  border: 1px solid;
}
item {
  width: 10px;
  height: 40px;
  background: grey;
}
.subgrid {
  display: grid;
  grid: auto / subgrid;
  grid-column: 1 / span 4;
  border: 0 solid lightblue;
  border-right-width: 80px;
  background: yellow;
}
.subgrid > item { background: lightgrey; }
</style>
<div class="grid-lanes">
  <item>1</item>
  <item>2</item>
  <item>3</item>
  <item style="width: 100%;">4</item>
  <div class="subgrid">
    <item>a</item>
    <item>b</item>
  </div>
</div>
</html>

/css/css-grid/grid-lanes/subgrid/grid-subgridded-to-grid-lanes/track-sizing/column-subgrid-extra-margin-001-ref.html

<!DOCTYPE HTML>
<html>
<meta charset="utf-8">
<style>
.grid {
  display: inline-grid;
  grid-template-columns: repeat(4, auto);
  grid-template-rows: auto auto;
  border: 1px solid;
}
item {
  width: 10px;
  height: 40px;
  background: grey;
}
.subgrid {
  display: grid;
  grid: auto / subgrid;
  grid-column: 1 / span 4;
  border: 0 solid lightblue;
  border-right-width: 80px;
  background: yellow;
}
.subgrid > item { background: lightgrey; }
</style>
<div class="grid">
  <item>1</item>
  <item>2</item>
  <item>3</item>
  <item style="width: 100%;">4</item>
  <div class="subgrid">
    <item>a</item>
    <item>b</item>
  </div>
</div>
</html>