sticky-css

<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <title>Document</title>
    <meta name="viewport" content="width=device-width,initial-scale=1.0,maximum-scale=1.0,minimum-scale=1.0,user-scalable=no">
    <style>
    .main-content {
        position: relative;
        overflow: hidden;
        color: #fff;
    }
    
    .clearfix {
        display: inline-block
    }
    
    .clearfix:after {
        display: block;
        content: ".";
        height: 0;
        line-height: 0;
        clear: both;
        visibility: hidden
    }
    
    .detail {
        position: fixed;
         100%;
        height: 100%;
        z-index: 100;
        overflow: auto;
        top: 0;
        left: 0;
        background: rgba(0, 0, 0, 0.4);
    }
    
    .detail-wrapper {
         100%;
        min-height: 100%;
    }
    
    .detail-close {
        position: relative;
         32px;
        height: 32px;
        margin: -64px auto 0 auto;
        clear: both;
        font-size: 32px;
    }
    
    .detail-main {
        /*margin-top: 64px;*/
        padding-bottom: 64px;
    }
    </style>
</head>

<body>
    <div class="main-content">
        <div class="detail">
            <div class="detail-wrapper clearfix">
                <div class="detail-main">
                    <p>hello every body</p>
                    <p>hello every body</p>
                    <p>hello every body</p>           
                </div>
            </div>
            <div class="detail-close">
                <i>x</i>
            </div>
        </div>
    </div>
</body>

</html>

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原文地址：https://www.cnblogs.com/zerohu/p/6863856.html