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垂直居中效果汇总

垂直居中是网站中一种常见的需求，常见的垂直居中效果和实现如下

1、具有固定宽高的div垂直居中

 

2、单行文本垂直居中

 

3、多行文本处置居中

 

4、图片垂直居中

 

案例与实现方法前点击链接：

http://www1.pconline.com.cn/magazine/20170220/test3.html

代码如下

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>test</title>
    <style>
        *{
            /*outline: 1px solid red;*/
        }
        body{
            text-align: center;
        }
        .div1{
            width: 200px;
            height: 200px;
            margin:auto;
            position: relative;
            border:1px solid green;

        }
        .div11{
            width: 100px;
            height: 100px;
            position: absolute;
            top:50%;
            left:50%;
            margin-left:-50px;
            margin-top:-50px;
            outline: 1px solid red;

        }
        .div2{
            width: 200px;
            height: 200px;
            border:1px solid blue;
            margin:auto;
            margin-top: 20px;
            text-align: center;
        }
        .span22{
            text-align: center;
            line-height: 200px;
        }
        .div3{
            width: 800px;
            height: 400px;
            margin:auto;
            border: 1px solid blue;
            margin-top: 20px;
            text-align: center;
            vertical-align: middle;
        }
        .div3 img{
            vertical-align: middle;
        }
        .span33{
            display: inline-block;
            width: 0px;
            height: 100%;
            vertical-align: middle;
        }
        .div4{
            width: 200px;
            height: 200px;
            margin:auto;
            border: 1px solid red;
            margin-top:20px;
            position: relative;
        }
    </style>
</head>
<body>
    <h3>1、具有固定宽高的div垂直居中</h3>
    <div class="div1">
        <div class="div11">div11</div>
    </div>
    <h3>2、单行文本垂直居中</h3>
    <div class="div2">
        <span class="span22">
            hello world
        </span>
    </div>
    <h3>3、多行文本处置居中</h3>
    <div class="div4">
        <div class="div44">hello helo heloo heloo  woe o egaghrbqrb naobjo bnorebjoqr  bneojb beorb oqer nojoqfjobq</div>
    </div>
    <script>
        var div44 = document.querySelector(".div44");
        div44W = div44.offsetWidth;
        div44H = div44.offsetHeight;
        div44.style.marginLeft=(div44.parentNode.offsetWidth-div44W)/2+"px";
        div44.style.marginTop =(div44.parentNode.offsetHeight-div44H)/2+"px";
    </script>
    <h3>4、图片垂直居中</h3>
    <div class="div3">
        <span class="span33"></span>
        <img src="a.jpg" alt="">
    </div>
</body>
</html>

 

 

posted on 2017-02-20 15:50  强大大  阅读(192)  评论(0)  编辑  收藏  举报