html,body,svg { height:100% }

by Kirubel Girma

HTML

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

<svg viewBox="0 0 100 100" xmlns="http://www.w3.org/2000/svg">
  <!-- Using g to inherit presentation attributes -->
  <g fill="white" stroke="green" stroke-width="5">
<Path d="M32.000526,8.0000329 C18.790301,8.0000329 8.0291177,18.733242 8.0001174,31.949499 7.9721171,45.183757 18.715301,55.972965 32.001525,56.000965 45.211749,56.000965 55.972934,45.268756 56.000934,32.051502 56.028934,18.818243 45.284751,8.0290342 32.000526,8.0000329 z M32.054526,6.6670075 C46.023765,6.6970082 57.363959,18.085229 57.333957,32.0545 57.304958,46.004772 45.944762,57.333992 32.001525,57.333992 L31.947524,57.333992 C25.18041,57.319992 18.823302,54.671939 14.04922,49.876846 9.2741395,45.081752 6.6520945,38.71363 6.6670953,31.947498 6.697095,17.978227 18.12629,6.6530071 32.054526,6.6670075 z M31.999007,5.3329916 C17.321057,5.3329921 5.3650557,17.257995 5.3330728,31.942993 5.3020674,46.647003 17.239057,58.635009 32.001022,58.666992 46.678973,58.666992 58.634975,46.742004 58.666957,32.057006 58.697963,17.352996 46.760974,5.365005 31.999007,5.3329916 z M32.068008,0 C49.712993,0.03799394 64.037944,14.423004 63.999953,32.067993 63.961959,49.688995 49.612987,64 32.001022,64 L31.932021,64 C14.287035,63.962005 -0.037918844,49.576995 7.5405096E-05,31.932006 0.038069784,14.311004 14.387041,-4.4430084E-07 32.068008,0 z" fill="#666666"/>
  </g>
</svg>

CSS

html,
body,
svg {
  height: 100%
}