html,body,svg { height:100% }

by jorgeluis

HTML

<!-- Learn about this code on MDN: https://developer.mozilla.org/en-US/docs/Web/SVG/Element/text -->

<svg viewBox="0 0 240 80" xmlns="http://www.w3.org/2000/svg">
  <style>
    .small { font: italic 13px sans-serif; }
    .heavy { font: bold 30px sans-serif; }

    /* Note that the color of the text is set with the    *
     * fill property, the color property is for HTML only */
    .Rrrrr { font: italic 40px serif; fill: red; }
  </style>

  <text x="20" y="35" class="small">My</text>
  <text x="40" y="35" class="heavy">cat</text>
  <text x="55" y="55" class="small" fill="transparent">is</text>
  <text x="65" y="55" class="Rrrrr">Grumpy!</text>
</svg>

CSS

html,body,svg { height:100% }