<!DOCTYPE html>
<html>
  <head>
    <meta charset="utf-8">
    <title>CSS mask-mode reference</title>
    <link rel="author" title="Ethan Lin" href="mailto:ethlin@mozilla.com">
    <link rel="author" title="Mozilla" href="https://www.mozilla.org">
    <style type="text/css">
      div {
        background-color: white;
        position: absolute;
        margin: 0px;
        padding: 0px;
        width: 100px;
        height: 100px;
        top: 10px;
      }

      div.auto {
        left: 10px;
        background-image: url(support/blue-100x100.svg);
      }

      div.alpha {
        left: 120px;
        background-image: url(support/blue-100x100.svg);
      }

      div.luminance1 {
        left: 230px;
        background-image: url(support/blue-luminance-100x100.svg);
      }

      div.luminance2 {
        left: 340px;
        background-image: url(support/red-luminance-100x100.svg);
      }

      div.luminance3 {
        left: 450px;
        background-image: url(support/green-luminance-100x100.svg);
      }
    </style>
  </head>
  <body>
    <div class="auto"></div>
    <div class="alpha"></div>
    <div class="luminance1"></div>
    <div class="luminance2"></div>
    <div class="luminance3"></div>
  </body>
</html>
