| <style type="text/css"> | |
| *{margin: 0; padding: 0;} | |
| /*body { | |
| display: flex; | |
| align-items: center; | |
| justify-content: center; | |
| flex-wrap: wrap; | |
| align-content: center; | |
| }*/ | |
| .row { | |
| display: flex; | |
| align-items:stretch; | |
| flex:auto; | |
| background-color: red; | |
| } | |
| .item { | |
| display: flex; | |
| height: 150px; | |
| flex:0 0 33%; | |
| align-items:center; | |
| justify-content:center; | |
| border: 1px solid #000; | |
| } | |
| @media screen and (min-width: 1620px) { | |
| .row { | |
| flex-direction: row; | |
| } | |
| } | |
| @media screen and (min-width:320px) and (max-width:500px){ | |
| .row { | |
| flex-direction: column; | |
| } | |
| } | |
| @media screen and (max-width:320px){ | |
| .row{ | |
| background-color:blue; | |
| flex-direction: column-reverse | |
| } | |
| } | |
| </style> | |
| <div class="row"> | |
| <div class="item">1</div> | |
| <div class="item">2</div> | |
| <div class="item">3</div> | |
| </div> |
原文：http://www.cnblogs.com/xuezizhenchengxuyuan/p/6377951.html