1. Holy Grail Layout Implementation Process

The holy grail layout is a three-column layout: fixed height on both sides, adaptive middle column, and priority rendering of the middle column

Implementation process

tail: clear float

Container: bfc

Three columns: float:left; positive:relative;height:500px

Left and right columns: width + background color

Move the left side to the front of the previous line: margin-left: -100%

Move right forward: right: -150px

For the container: pandding-left: 200px; padding-right: 150px

Implementation

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
    <style>
        body{
            min-width: 550px;
            font-weight: bold;
            font-size: 20px;
        }

        .header,.footer{
            background-color: rgba(29,27,27,0.726);;
            text-align: center;
            height: 60px;
            line-height: 60px;
        }

        .footer{
            /*清除浮动*/
            clear: both;
        }

        .middle,.left,.right{
            height: 100px;
        }
        .content{
            padding-left: 200px; /*空出left的位置*/
            padding-right: 150px; /*空出right的位置*/
            overflow: hidden;
        }

        .content div{
            position: relative;
            float: left;
            text-align: center;
            height: 300px;
            line-height: 300px;
        }

        .middle {
            width: 100%;
            background-color: orange;
        }
        .left {
            width: 200px;           /* leftContent width */
            right: 200px;           /* leftContent width */
            margin-left: -100%;
            background-color: green;
        }
        .right {
            width: 150px;           /* rightContent width */
            margin-left: -150px;   /* rightContent width */
            right: -150px;
            background-color: skyblue;
        }
    </style>
</head>
<body>
<div class="header">header</div>
<div class="content wrapper">
    <div class="middle">middle</div>
    <div class="left">left</div>
    <div class="right">right</div>
</div>
<div class="footer">footer</div>
</body>
</html>

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1. Holy Grail Layout Implementation Process

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