<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8" />
<title>test</title>
<style>
/*上下左右居中*/
#power > span{
height:50px; /*对于center2必须指明高度*/
width: 200px; /*对于center3必须要指明宽度*/
border: 1px solid red;
margin: 10px 0;
}
/*1. flex : ie等老式浏览器可能不支持*/
.center1{
display:flex;
align-items:center;
justify-content:center;
}
/*2. line-height*/
.center2{
display:block;
line-height: 50px;
text-align:center;
}
/*3. table-cell */
.center3{
display:table-cell;
vertical-align:middle;
text-align:center;
}
</style>
</head>
<body>
<div id="power"></div>
<script src="../js/jquery.min.js"></script>
<script type="text/javascript">
$(function () {
$('#power')
.append('<span class="center1">上下左右居中:center1</span>')
.append('<span class="center2">上下左右居中:center2</span>')
.append('<span class="center3">上下左右居中:center3</span>');
});
</script>
</body>
</html>
追问我是感谢你呢?还是感谢百度?
追答都可以