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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
"http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<title></title>
<style type="text/css">
div{
line-height: 50px;
border: 1px solid #333;
height: 50px;
}
</style>
</head>
<body>
<div>
<select>
<option>1234</option>
</select>
</div>
</body>
</html>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
"http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<title></title>
<style type="text/css">
div{
display:table-cell;
border: 1px solid #333;
height: 50px;
line-height:50px;
vertical-align:middle;
position:relative;
}
p{
+position:absolute;
top:50%;
}
select{
+position:relative;
top:-50%;
}
</style>
</head>
<body>
<div>
<p>
<select>
<option>1234</option>
</select>
</p>
</div>
</body>
</html>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
"http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<title></title>
<style type="text/css">
div{
line-height: 50px;
border: 1px solid #333;
height: 50px;
position:relative;
}
select{
position:absolute;
top:30%;
}
</style>
</head>
<body>
<div>
<select>
<option>1234</option>
</select>
</div>
</body>
</html>
div
{
line-height: 50px;
border: 1px solid #333;
height: 50px;
text-align: center;/*DIV里元素居中*/
}
select
{
position:relative;
top:50%;/*该元素顶部与父元素顶距离,若要更佳垂直居中效果,需要考虑元素本身高度,如在此例30%更好。*/
}