gn/#valdef-justify-self-stretch">
<link rel="help" href="https://drafts.csswg.org/css-align/#valdef-align-self-stretch">
<meta name="assert" content="The stretched grid items along the column and/or row axis respect their defined margin-box's boundaries.">
<link rel="stylesheet" type="text/css" href="/fonts/ahem.css" />
<style>
.grid {
  position: relative;
  display: inline-grid;
  font: 20px/1 Ahem;
  background: grey;
  width: 250px;
  height: 250px;
  writing-mode: vertical-rl;
}
.firstRowFirstColumn {
