css佈局-實現左中右佈局的5種方式

木子昭發表於2018-03-03
CSS
左中右佈局
<!doctype html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport"
          content="width=device-width, user-scalable=no, initial-scale=1.0, maximum-scale=1.0, minimum-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>Document</title>
    <style>
        html *{
            margin: 0;
            padding: 0;
        }

        article{
            height: 100px;
        }
        section{
            margin-top: 10px;
        }

        .left{
            width: 300px;
            height: 100px;
            background-color: #823384;
            text-align: center;
            font-size: 20px;
            color: #fdf6e3;
        }
        .center{
            height: 100px;
            background-color: #d29922;
        }
        .right{
            width: 300px;
            height: 100px;
            background-color: #0c8ac5;
            text-align: center;
            font-size: 20px;
            color: #fdf6e3;
        }

    </style>
</head>
<body>
<!--浮動佈局-->
<!--左浮動, 右浮動, 中間自動填充-->
<section class="layout float">
    <style>
        .float article div{

        }
        .float article .left{
            float: left;
        }
        .float article .right{
            float: right;
        }
        .float article .center{
        }

    </style>


    <article class="left-right-center">

        <div class="left">左邊</div>
        <div class="right">右邊</div>
        <div class="center"><h1>
            浮動float佈局:
        </h1> 左元素: float: left; 右元素: float: right; 中間元素:自動填充</div>

    </article>
</section>

<!--絕對定位-->
<section class="layout absolute">
    <style>
        article{
            position: relative;
        }

        .absolute .left-center-right div{
            position: absolute;
        }

        .absolute .left-center-right .left{
            left: 0;
        }

        .absolute .left-center-right .center{

            left: 300px;
            right: 300px;
        }

        .absolute .left-center-right .right{
            right: 0;

        }

    </style>
    <article class="left-center-right">

        <div class="left">左邊</div>
        <div class="center"><h1>
            絕對absolute定位佈局:
        </h1> 左邊元素: position: absolute; left: 0;

            右邊元素: position: absolute; right:0; 中間元素: position: absolute;left:300px; right: 300px;
        </div>
        <div class="right">右邊</div>
    </article>
</section>

<!--flex佈局-->
<section class="layout flexbox">

    <style>

        .flexbox .left-center-right{

            display: flex;

        }
        .flexbox .left-center-right .left{

        }
        .flexbox .left-center-right .center{

            flex:1;
        }

        .flexbox .left-center-right .right{

        }

    </style>

    <article class="left-center-right">
        <div class="left">左邊</div>
        <div class="center"><h1>
            flex佈局:
        </h1> 父元素display:flex; 左右子元素設定寬度300px; 中間子元素設定flex:1;</div>
        <div class="right">右邊</div>
    </article>
</section>

<!--表格佈局-->
<section class="table-box layout">
    <style>
        .table-box .left-center-right{
            width: 100%;
            display: table;
        }

        .table-box .left-center-right>div{

            display: table-cell;

        }

        .table-box .left-center-right .left{
        }

        .table-box .left-center-right .center{
        }

        .table-box .left-center-right .right {
        }

    </style>
    <article class="left-center-right">
        <div class="left">左邊</div>
        <div class="center"><h1>
            表格table佈局:
        </h1> 父元素width: 100%; display: table;
            左右子元素display: table-cell; width: 300px; </div>
        <div class="right">右邊</div>
    </article>
</section>

<!--網格佈局-->
<section class="grid layout">
    <style>

        .grid article{
            display: grid;
            width: 100%;
            grid-template-rows: 100px;
            grid-template-columns: 300px auto 300px;
        }

    </style>
    <article class="left-center-right">
        <div class="left">左邊</div>
        <div class="center"><h1>
            網格grid佈局:
        </h1> 父元素寬度為100%,
            父元素width: 100%; display:grid; grid-template-rows: 100; grid-template-columns: 300px auto 300px</div>
        <div class="right">右邊</div>
    </article>
</section>

</body>
</html>


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