column-grid-lanes-item-baseline-subgrid-004-ref.html

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<!DOCTYPE html>

<meta charset="utf-8">

<link rel="stylesheet" type="text/css" href="/fonts/ahem.css">

<style>

  html, body { color: black; background: white; padding: 0; margin: 0; }

  .grid {

    display: inline grid;

    grid-template-columns: 60px 60px;

    grid-template-rows: auto auto;

    font: 16px/1 Ahem;

    border: 1px solid black;

    place-content: start;

    justify-items: baseline;

  .subgrid {

    display: grid;

    grid-column: 1 / span 2;

    grid: auto / subgrid;

    justify-items: baseline;

  .b { text-decoration: underline; writing-mode: vertical-rl; }

  .big   { font-size: 40px; }

  .med   { font-size: 28px; }

  .small { font-size: 20px; }

  .c1 { grid-column: 1; }

  .c2 { grid-column: 2; }

</style>

<div class="grid">

  <div class="b small c1">X</div>

  <div class="b small c2">X</div>

  <div class="subgrid">

    <div class="b big">X</div>

    <div class="b med">X</div>

  </div>

</div>