1
.navtext{
width:800px;
height:600px;
border: 1px solid black;
justify-content:center;
align-items: center;
display: flex;
display: -webkit-flex;
}
2
<div class="navtext"> 都达到 <label>ss </label> </div>
原文：http://www.cnblogs.com/lgjc/p/6262382.html