<!DOCTYPE html>
<html>
<head>
<meta charset="gb2312/">
<title>选择器的运用</title>
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</style>
</head>
<body>
<div>
<div id="divOne" style="border:1px solid;width:330px;height:220px;">
<p id="p1" style="float:left;margin:10px">段落1</p>
<p id="p2" style="float:left;margin:10px">段落2</p>
<p id="p3" style="float:left;margin:10px">段落3</p>
</div>
</div>
</body>
</html>