flex之圣杯布局

最终效果

html

<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>

css

   *{
        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;
    }