用 float(漂浮)属性就可以了,如下:
<html xmlns="
http://www.dayinmandarin.com">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>漂浮</title>
<style type="text/css">
.dad{width:600px;height:200px;border:#30F solid 2px;}
.dad div{float:left;width:150px;height:100px;border:#C0F solid 1px;margin:20px;}
</style>
</head>
<body>
<div class="dad">
<div>1号</div><div>2号</div><div>3号</div>
</div>
</body>
</html>本回答被提问者采纳