<!DOCTYPE HTML>
<!--
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     http://creativecommons.org/publicdomain/zero/1.0/
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<html><head>
  <meta charset="utf-8">
  <title>Reference: subgrids with different writing-mode than parent</title>
  <link rel="author" title="Mats Palmgren" href="mailto:mats@mozilla.com">
  <style>
html,body {
  color:black; background-color:white; font:12px/1 monospace;
}

.grid {
  display: grid;
  grid: repeat(4, auto) / repeat(5, auto);
  place-content: start;
  border: 1px solid;
}

.subgrid {
  display: grid;
  grid: auto / auto;
  background: lightgrey;
  grid-column: 2 / span 5;
  grid-row: 2 / span 5;
  min-width:10px;
  min-height:0;
  border: 0 solid lightblue;
  border-bottom-width: 40px;
}

.vlr {
  writing-mode: vertical-lr;
  grid: auto / auto;
  grid-column: 2 / span 5;
  grid-row: 3 / span 5;
  background: blue;
}

x {
  min-width:10px;
  min-height:0px;
}
x:nth-child(2n+1) { background: silver; }
x:nth-child(2n+2) { background: grey; }
x:nth-child(2n+3) { background: pink; }
x:nth-child(2n+4) { background: black; }

.hl { writing-mode: horizontal-tb; direction:ltr; }
.hr { writing-mode: horizontal-tb; direction:rtl; }
.vl { writing-mode: vertical-lr; }
.vr { writing-mode: vertical-rl; }
.vlr { writing-mode: vertical-lr; direction:rtl; }
.vrl { writing-mode: vertical-rl; direction:ltr; }

  </style>
</head>
<body>

<div class="grid">
<x style="grid-row:1"></x><x style="grid-row:2"></x><x style="grid-row:3"></x><x style="grid-row:4"></x><x style="grid-row:5"></x><x style="grid-row:6"></x>
  <div class="subgrid vrl" style="text-indent:10px">
    A B
  </div>
</div>

<div class="grid">
<x style="grid-row:1"></x><x style="grid-row:2"></x><x style="grid-row:3"></x><x style="grid-row:4"></x><x style="grid-row:5"></x><x style="grid-row:6"></x>
  <div class="subgrid vr">
    <div class="subgrid hr">A B</div>
  </div>
</div>

<div class="grid">
<x style="grid-row:3; height:50px; background:black"></x>
<x style="grid-row:4; height:50px; background:pink"></x>
<x style="grid-row:5; height:40px; background:black"></x>
<div class="subgrid vlr">
<div class="subgrid hl">
  <x style="grid-row:2 / span 2; height: 100px">A B C D E F</x>
</div>
</div>
</div>


</body>
</html>