css图片垂直居中

css图片垂直居中
一.style代码

    .case-pic{
        height: 125px;
        position: relative;
        text-align: center
    }
    .case-pic span{
        display: inline-block;
        height: 100%;
        vertical-align: middle;
    }
    .case-pic .img{
        height: 60px;
        vertical-align:middle;
    }

二.html代码

<div class="case-pic"><span></span><img src="public/images/case_1.jpg" alt="" /></div>