文字垂直居中代码
外层框设定高度height=行高line-height
图片居中
vertical-align:middle
<!doctype html>
<html>
<head>
<style>
form{
border:15px solid red;
height:100px;
text-align:center;
padding:5px;
line-height:100px;
}
div{
height:500px;
border:15px solid blue;
line-height:500px;
text-align:center;
}
div img{
vertical-align:middle;
}
</style>
</head>
<body>
<form>
<input type="submit" value="提交">
<input type="text" value="请输入文字">
</form>
<div>
<img src="http://d.lanrentuku.com/down/png/1505/android-lollipop-icon-set-by-tinylab/goodreads.png">
</div>
</body>
</html>
