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;    }<div class="container">    <div class="left"></div>    <div class="middle"></div>    <div class="right"></div></div>

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;    }  <div class="container">    <div class="left">qqq</div>    <div class="middle">qqq</div>    <div class="right">wwww</div></div>

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;    }   <div class="container">    <div class="left">qqq</div>    <div class="middle">qqq</div>    <div class="right">wwww</div></div>

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;    }    <div class="container">    <div class="row">        <div class="left"></div>        <div class="middle"></div>        <div class="right"></div>    </div>    <div class="row">        <div class="left"></div>        <div class="middle"></div>        <div class="right"></div>    </div>    <div class="row">        <div class="left"></div>        <div class="middle"></div>        <div class="right"></div>    </div></div>

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;    }    <div class="container">    <div class="header">Header</div>    <div class="content">        <div class="content-left">Left</div>        <div class="content-middle">Center</div>        <div class="content-right">Right</div>    </div>    <div class="footer">Footer</div></div>

缩小浏览器窗口之后

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