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<!DOCTYPE>
<head>
  <style>
    body {
      border:  0px;
      margin:  0px;
      padding: 0px;
    }
    img {
      width:  100px;
      height: 200px;
    }
  </style>
</head>
<body>
  <img src="image-orientation-no-viewbox-no-size.svg">

  <script>
    var orientationInfo = location.search.substring(1).split("&");
    var angle = orientationInfo[0];
    var flip = orientationInfo[1] == "flip" ? true : false;

    // Construct a style. "from-image" is special-cased.
    var orientationStyle;
    if (angle == "from-image") {
      orientationStyle = "image-orientation: from-image;";
    } else {
      orientationStyle = "image-orientation: "
                       + angle + "deg"
                       + (flip ? " flip" : "")
                       + ";";
    }

    // Since the SVG image has no intrinsic size, we need to apply an
    // appropriate size to the <img> element to match the reference.
    var boxStyle;
    if (angle == "90" || angle == "270") {
      boxStyle = "width: 200px; height: 100px;";
    } else {
      boxStyle = "width: 100px; height: 200px;";
    }

    var style = "img { "
              + orientationStyle
              + " "
              + boxStyle
              + " }\n";

    // Apply the style to the document.
    var sheet = document.createElement('style');
    sheet.innerHTML = style;
    document.body.appendChild(sheet);
  </script>
</body>