标签：
<a href="" style="display:block;position:relative;">
<div class="slink_imgbox">
<div class="slink_img">
<img src="https://www.yuancangipr.com/beianadmin/fileUpload/temp/rihanna-met-gala-2017.jpg"/>
</div>
</div>
</a>
css：
.infor_img_box {
float: left;
margin: 30px 30px 30px 0;
width: 240px;
height: 150px;
display:table;table-layout:fixed;
}
.infor_img {
display: table-cell;
vertical-align: middle;
text-align: center;
width: 240px;
height: 150px;
font-size: 0;
}
.infor_img img {
display: inline-block;
width: auto;
height: auto;
max-width: 100%;
max-height: 100%;
vertical-align: middle;
}
效果图：