how to make svg:hover work in all browsers

Please help. The following code works well in Firefox but not in any other browser. Am I missing something?

<!doctype html>
<html>
<head>
<meta charset="utf-8">
<title>Untitled Document</title>
<svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" style="display: none;">
  <defs>
  <symbol id="icon-video" viewBox="0 0 1024 721" aria-labeledby="title">
  <title>YouTube Play Button</title>
  <path class="button" d="M1023.6,361.5c0,24.5,0.9,49-0.2,73.5c-1.7,36.6-4.7,73.1-7.3,109.6c-2,28.9-8.5,56.9-19.3,83.8
  c-18.2,45.4-52.8,70.6-100,78.3c-23.1,3.8-46.7,4.9-70.1,6.1c-41.1,2.1-82.2,3.5-123.3,5c-22.1,0.8-44.3,1.1-66.4,1.5
  c-42.3,0.6-84.6,1.5-126.9,1.3c-46.1-0.1-92.3-1-138.4-1.9c-36.6-0.7-73.2-1.6-109.9-3c-30.8-1.2-61.6-2.4-92.2-5
  c-19-1.6-38.1-4.6-56.6-9.3c-43-11.1-71.6-38.4-86-80.7c-8.9-26-14.7-52.5-16.6-79.9c-2.5-35.4-5.8-70.7-6.7-106.1
  C2.5,389.7,2.8,344.9,3.3,300c0.5-48,4-95.8,10.1-143.4c3.3-25.8,10.5-50.9,22.3-74.2c18.4-36.2,48.9-57,87.9-65
  c17.2-3.5,34.9-4.9,52.5-5.9c38.2-2.2,76.5-3.9,114.7-5.2c32.9-1.2,65.9-1.7,98.9-2.3c25.6-0.5,51.3-0.8,76.9-1
  c24.3-0.2,48.6-0.5,73-0.5c30.3,0.1,60.6,0.5,90.9,1c28.6,0.5,57.3,1,85.9,2c44.6,1.7,89.2,3.5,133.7,5.9
  c21.2,1.1,42.7,2.1,63.2,8.2c44.1,13.2,73,41.9,87.5,85.7c8.8,26.7,14.1,54,15.9,82c2.2,34.2,5,68.4,6.5,102.7
  C1024.5,313.8,1023.7,337.6,1023.6,361.5C1023.6,361.5,1023.6,361.5,1023.6,361.5z M408.2,494c92.1-47.8,183.5-95.1,275.9-143
  c-92.5-48.3-183.9-96-275.9-144C408.2,303,408.2,397.9,408.2,494z"/>
  <path class="image" d="M408.2,494c0-96.1,0-191,0-287c92,48,183.4,95.7,275.9,144C591.6,398.9,500.3,446.3,408.2,494z"/>
  </symbol>
  </defs>
</svg>
<style>
svg .image {
  fill: #FFFFFF;
}
svg .button {
  fill: #21427B;
  opacity: 0.5;
}
svg:hover .button { 
  fill: #CC181E;
    opacity: 1;
}
</style>
</head>
<body>
<svg width="64px"><use xlink:href="#icon-video"></use></svg>
</body>
</html>