HTML Code

<!DOCTYPE html>

<html lang="en">

<head>

  <meta charset="UTF-8">

  <meta name="viewport" content="width=device-width, initial-scale=1.0">

  <title>writing-mode comparison</title>

  <style>

    body {

      font-family: system-ui, sans-serif;

      padding: 1.5rem;

      line-height: 1.5;

      color: #334155;

      background: #f8fafc;

    }



    .row {

      display: flex;

      flex-wrap: wrap;

      gap: 1.25rem;

      margin-top: 1rem;

    }



    .demo {

      padding: 0.75rem 1rem;

      border: 1px solid #cbd5e1;

      border-radius: 0.35rem;

      background: #fff;

      min-height: 6rem;

    }



    .label {

      font-size: 0.75rem;

      font-weight: 700;

      text-transform: uppercase;

      letter-spacing: 0.04em;

      color: #64748b;

      margin-bottom: 0.5rem;

    }



    .horizontal-tb { writing-mode: horizontal-tb; width: 12rem; }

    .vertical-rl { writing-mode: vertical-rl; height: 8rem; }

    .vertical-lr { writing-mode: vertical-lr; height: 8rem; }

  </style>

</head>

<body>

  <h1>writing-mode values</h1>

  <div class="row">

    <div>

      <div class="label">horizontal-tb</div>

      <div class="demo horizontal-tb">Lines stack top to bottom.</div>

    </div>

    <div>

      <div class="label">vertical-rl</div>

      <div class="demo vertical-rl">Lines stack right to left.</div>

    </div>

    <div>

      <div class="label">vertical-lr</div>

      <div class="demo vertical-lr">Lines stack left to right.</div>

    </div>

  </div>

</body>

</html>

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CSS writing-mode Property - Compare Values