CSS基础11-视差滚动

background-attachment实现（将图片一开始就固定在初始位置）

background-attachment三种属性取值

scroll：背景固定于背景容器本身区域，它会随着背景容器的滚动，而不是随着它的内容滚动（也可以看成是对元素边框固定，正常浏览器就是这个效果）
fixed：背景图片附着在浏览器的可视区域，因为浏览器的可视区域不具备滚动的性格，所以它是不滚动的
local：这是CSS3新增的属性值，背景图片附着在背景容器的内容区域，它会随着内容的滚动而滚动
效果

代码

<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>
        div {
            height: 100vh;
            background: rgba(0, 0, 0, .7);
            color: #fff;
            line-height: 100vh;
            text-align: center;
            font-size: 20vh;
        }
        .img1{
            background-attachment: fixed; /*背景相对于浏览器固定 视差滚动关键*/
            background-size: cover; /*将图片放大直到铺满整个容器*/
            background-position: center center; /*左右上下居中*/
            background-image: url("https://gimg2.baidu.com/image_search/src=http%3A%2F%2Fimg.jj20.com%2Fup%2Fallimg%2F1114%2F0G020114924%2F200G0114924-15-1200.jpg&refer=http%3A%2F%2Fimg.jj20.com&app=2002&size=f9999,10000&q=a80&n=0&g=0n&fmt=auto?sec=1658835043&t=dd74082e5025a0f4f87530900371344b");
        }
        .img2{
            background-attachment: fixed;
            background-size: cover;
            background-position: center center;
            background-image: url("https://gimg2.baidu.com/image_search/src=http%3A%2F%2Fimg.jj20.com%2Fup%2Fallimg%2F1113%2F0F420110430%2F200F4110430-6-1200.jpg&refer=http%3A%2F%2Fimg.jj20.com&app=2002&size=f9999,10000&q=a80&n=0&g=0n&fmt=auto?sec=1658835043&t=405bde91b907771427c6e55e9a480dde");
        }
        .img3{
            background-attachment: fixed;
            background-size: cover;
            background-position: center center;
            background-image: url("https://gimg2.baidu.com/image_search/src=http%3A%2F%2Fimg.jj20.com%2Fup%2Fallimg%2Ftp09%2F210F2130512J47-0-lp.jpg&refer=http%3A%2F%2Fimg.jj20.com&app=2002&size=f9999,10000&q=a80&n=0&g=0n&fmt=auto?sec=1658835043&t=d66d9f36c430b399ff81b507359e4efe");
         }

    </style>
</head>
<body>
    <div class="text">1</div>
    <div class="img1">2</div>
    <div class="text">3</div>
    <div class="img2">4</div>
    <div class="text">5</div>
    <div class="img3">6</div>
    <div class="text">7</div>

</body>
</html>
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原文地址：https://blog.csdn.net/weixin_64925940/article/details/125473562