chromium/third_party/blink/web_tests/external/wpt/css/css-backgrounds/border-color_transparent.html

<!DOCTYPE html>
<html>
<head>
    <title>CSS Backgrounds and Borders Test: border-clip_border-box</title>
    <link rel="author" title="Dong An" href="mailto:[email protected]">
    <link rel="help" href="http://www.w3.org/TR/css3-background/#the-border-color">
    <meta name="assert" content="Test transparent of border-color">
    <style type="text/css">
      .container {
        border: 1px solid red;
        width:100px;
        height:100px;
        background-color:#eee;
      }
      .triangle-up {
        height: 0;
        width: 0;
        border: 50px solid #e5c3b2;
        border-color: transparent transparent #e5c3b2 transparent;
      }
    </style>
</head>
<body>
<p>Test passes if the shape is an up triangle </p>
    <div class="container">
        <div class="triangle-up"></div>
    </div>
</body>
</html>