<!DOCTYPE html>

<html>
<head>
  <style>
    .box {
      display: inline-block;
      height: 120px;
      width: 400px;
      margin: 10px;
      border: 1px solid black;
      background-repeat: no-repeat;
    }

    .linear1 {
      background-image: -webkit-repeating-linear-gradient(0deg, green 150px, blue 175px, blue 200px);
      background-image: -moz-repeating-linear-gradient(0deg, green 150px, blue 175px, blue 200px);
    }
  </style>
  <script>
    if (window.testRunner) {
      var dumpPixels = true;
      testRunner.dumpAsText(dumpPixels);
    }
  </script>
</head>
<body>

  <div class="linear1 box"></div>

</body>
</html>