css3学习之flex实现几种多列布局

基本的等分三列布局

.container{
 display: flex;
 width: 500px;
 height: 200px;
 }
 .left{
 flex:1;
 background: red;
 }
 .middle{
 flex:1;
 background: green;
 }
 .right{
 flex:1;
 background: blue;
 }
<p class="container">
 <p class="left"></p>
 <p class="middle"></p>
 <p class="right"></p>
</p>

三列 左中定宽 右侧自适应

 .container{
 display: flex;
 height: 300px;
 }
 .left{
 flex: 0 0 100px;
 background-color: red;
 }
 .middle{
 flex: 0 0 100px;
 background-color: green;
 }
 .right{
 flex:1;
 background-color: blue;
 }
 <p class="container">
 <p class="left">qqq</p>
 <p class="middle">qqq</p>
 <p class="right">wwww</p>
</p>

缩小浏览器窗口后

## 左右固定，中间自适应 ##

 .container{
 display: flex;
 height: 300px;
 }
 .left{
 width: 100px;
 background-color: red;
 }
 .middle{
 flex: 1;
 background-color: green;
 }
 .right{
 width: 100px;
 background-color: blue;
 }
 <p class="container">
 <p class="left">qqq</p>
 <p class="middle">qqq</p>
 <p class="right">wwww</p>
</p>

缩小浏览器窗口后

九宫格布局

 .container{
 display: flex;
 height: 300px;
 width: 300px;
 flex-direction: column;
 }
 .row{
 display: flex;
 height: 100px;
 }
 .left{
 flex: 1;
 height: 100px;
 border: 1px solid red;
 }
 .middle{
 flex: 1;
 height: 100px;
 border: 1px solid green;
 }
 .right{
 flex: 1;
 height: 100px;
 border: 1px solid blue;
 }
 <p class="container">
 <p class="row">
 <p class="left"></p>
 <p class="middle"></p>
 <p class="right"></p>
 </p>
 <p class="row">
 <p class="left"></p>
 <p class="middle"></p>
 <p class="right"></p>
 </p>
 <p class="row">
 <p class="left"></p>
 <p class="middle"></p>
 <p class="right"></p>
 </p>
</p>

圣杯布局

 *{
 margin:0;
 padding:0;
 }
 .container{
 display: flex;
 flex-direction: column;
 min-height: 100vh;
 justify-content: space-between;
 }
 .header{
 background: red;
 flex: 0 0 100px;
 }
 .content{
 display: flex;
 flex:1;
 }
 .content-left{
 flex: 0 0 100px;
 background: green;
 }
 .content-right{
 flex: 0 0 100px;
 background: pink;
 }
 .content-middle{
 flex:1;
 }
 .footer{
 background: yellow;
 flex: 0 0 100px;
 }
 <p class="container">
 <p class="header">Header</p>
 <p class="content">
 <p class="content-left">Left</p>
 <p class="content-middle">Center</p>
 <p class="content-right">Right</p>
 </p>
 <p class="footer">Footer</p>
</p>

缩小浏览器窗口之后

总结：