<!DOCTYPE html>
<html>
<head>
<meat charset="utf-8">
? ? <title>區(qū)塊級元素與行內元素相互轉換</title>
? ? <link rel="shortcut icon" type="image/x-icon" href="images/favicon .ico">
? ? <style type="text/css">
? ? p{display:inline;width:200px;height:200px;backgroud-color:#ccc; }
? ? b{display:block;}
? ? /*div{display:inline-block;height:30px;width:400px;background-color:pink;}*/
.box{width:100px;height:40px;background-color:#ccc;line-height: 40px;text-align: center;}
#. main{width:100px;height:100px;background-color:pink;line-height:100px; text-align:center;display:none;}
.box:hover .main{display:block; }
</style>
</head>
<body>
<p>區(qū)塊級元素轉為行內元素</p><span>123</span>
<b>行內元素主為區(qū)塊級元素</b>
<div>將標答轉換為行內塊元素</div><span>123</span>
<div class="box">導航</div>
#<div class ="main">小選單</div>
</body>
</html>
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<div class="box">導航</div>
<div class="main">小選單</div>
#.box :hover .main {}
說明.main 在.box 內部
<div class="box">導航
????<div class="main" >小選單</div>
</div>
