Html程序  |  32行  |  641 B

<html>
<head>
  <style type="text/css">
    iframe {
        position: relative;
        z-index: 1;
        left: 10px;
        top: 10px;
        border: 1px solid black;
    }

    #overlap {
        position: absolute;
        width: 100px;
        height: 100px;
        z-index: 2;
        left: 10px;
        top: 100px;
        background-color: blue;
    }
    p {
        margin-top: 50px;
    }
  </style>
</head>
<body>
<div id="overlap"></div>
<iframe id="frame" src="resources/blit-on-scroll-subframe.html" scrolling="no"></iframe>
<p>The blue box should not get "smeared" when you scroll the inner iframe.</p>
</body>
</html>