css多种方式实现双飞翼布局

<style>    *{        margin: 0;        padding: 0;        box-sizing: border-box;    }    .clearfix:before,    .clearfix:after{        display: table;        content: " ";        clear: both;    }    .container{        padding: 0 200px;    }    .header,    .footer{        height: 200px;        font-size: 28px;        background-color: #f3f3f3;    }    .left{        position: relative;        /* 2、将.left再次拉到最左边，否则.main的左侧会有200px的空白 */        left: -200px;        float: left;        width: 200px;        min-height: 300px;        /* 1、将.left拉到最左边，原来.left是掉下去的 */        margin-left: -100%;        background-color: #f00;    }    .main{        float: left;        width: 100%;        min-height: 300px;        background-color: #c32228;    }    .right{        position: relative;        /* 2、将.right再次拉到最右边，否则.main的右侧会有200px的空白 */        right: -200px;        float: left;        width: 200px;        /*/1、将.right拉到最右边，原来.right是掉下去的 */        margin-left: -200px;        min-height: 300px;        background-color: #f90;    }</style>

<div class="header">header</div><div class="container clearfix">    <div class="main">main</div>    <div class="left">left</div>    <div class="right">right</div></div><div class="footer">footer</div>    

<style>    *{        margin: 0;        padding: 0;        box-sizing: border-box;    }    .clearfix:before,    .clearfix:after{        display: table;        content: " ";        clear: both;    }    .header,    .footer{        height: 200px;        font-size: 28px;        background-color: #f3f3f3;    }    .left{        float: left;        width: 200px;        min-height: 300px;        /* 将.left拉到最左边，原来.left是掉下去的 */        margin-left: -100%;        background-color: #f00;    }    .main{        float: left;        width: 100%;        min-height: 300px;        /* .left、.right各占了200px，因此需要将其抵消掉 */        padding: 0 200px;        background-color: #c32228;    }    .right{        float: left;        width: 200px;        /* 将.right拉到最右边，原来.right是掉下去的 */        margin-left: -200px;        min-height: 300px;        background-color: #f90;    }    </style>

<div class="header">header</div><div class="container clearfix">    <div class="main">        <div class="main-inner">main</div>    </div>    <div class="left">left</div>    <div class="right">right</div></div><div class="footer">footer</div>

<style>    *{        margin: 0;        padding: 0;        box-sizing: border-box;    }    .container{        display: table;    }    .header,    .footer{        height: 200px;        font-size: 28px;        background-color: #f3f3f3;    }    .left,    .right,    .main{        /* 外层容器使用table-cell布局，设置元素为table-cell布局后它们就能在一行显示了，display: table-cell;设置宽度无效，因此他们的宽度由内容撑开。 */        display: table-cell;                }    .left-inner{        width: 200px;        min-height: 300px;        background-color: #f00;    }    .main{        width: 100%;                }    .main-inner{        min-height: 300px;        background-color: #c32228;    }    .right-inner{        width: 200px;        min-height: 300px;        background-color: #f90;    }</style>

<div class="header">header</div><div class="container clearfix">        <div class="left">        <div class="left-inner">left</div>    </div>    <div class="main">        <div class="main-inner">main</div>    </div>    <div class="right">        <div class="right-inner">right</div>    </div></div><div class="footer">footer</div>    

<style>    *{        margin: 0;        padding: 0;        box-sizing: border-box;    }    .container{        position: relative;        padding: 0 200px;    }    .header,    .footer{        height: 200px;        font-size: 28px;        background-color: #f3f3f3;    }    .left{        position: absolute;        top: 0;        left: 0;        width: 200px;        min-height: 300px;        background-color: #f00;    }    .main{        min-height: 300px;        background-color: #c32228;    }    .right{        position: absolute;        top: 0;        right: 0;        width: 200px;        min-height: 300px;        background-color: #f90;    }    </style>

<div class="header">header</div><div class="container clearfix">    <div class="left">left</div>    <div class="main">mian</div>    <div class="right">right</div></div><div class="footer">footer</div>

<style>    *{        margin: 0;        padding: 0;        box-sizing: border-box;    }    .clearfix:before,    .clearfix:after{        display: table;        content: " ";        clear: both;    }    .container{        display: flex;    }    .header,    .footer{        height: 200px;        font-size: 28px;        background-color: #f3f3f3;    }    .left{        flex: 0 0 200px;        width: 200px;        min-height: 300px;        background-color: #f00;    }    .main{        flex: 1;        width: 100%;        min-height: 300px;        background-color: #c32228;    }    .right{        flex: 0 0 200px;        width: 200px;        min-height: 300px;        background-color: #f90;    }</style>

<div class="header">header</div><div class="container clearfix">        <div class="left">left</div>    <div class="main">main</div>    <div class="right">right</div></div><div class="footer">footer</div>