HTML5--div、span超出部分省略号显示

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
    <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
    <title>CSS省略号代码</title>
    <style type="text/css">
        *{
            margin: 0;
            padding: 0;
        }
        body
        {
            padding: 10px;
            font-family: Arial;
        }
        #ididid
        {
            position: absolute;
            width: 150px;
            height: 20px;
            line-height: 20px;
            text-overflow: ellipsis;
            white-space: normal;
            white-space: nowrap;
            overflow: hidden;
        }
        #ididid span
        {
            position: absolute;
            top: 0;
            right: 0;
            display: block;
            float: left;
        }
        #ididid span:after
        {
            content: "...";
        }
    </style>
</head>
<body>
<div id="ididid">
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</body>
</html>
HTML5--div、span超出部分省略号显示

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