html+css实现图片扫描仪特效

作者：袖梨 2025-07-17

本文主要介绍了html css 图片扫描仪，分享给大家，具体如下：

效果：

这样，有抖动的：

无抖动的：

实现：

1.定义一个盒子：

<body>    <div class="tu"></div></body>

2.基本样式，长宽背景图等等~

 .tu{            width: 500px;            height: 300px;            background-image: url(8.jpg);            background-size: 100% auto;            background-repeat: no-repeat;            position: relative;            overflow: hidden;            cursor: pointer;        }

cursor: pointer;鼠标经过盒子样式为小手

3.用伪类元素做扫描线，基本样式：

 .tu::after{            content: '';            position: absolute;            top: 0;            left: 0;            width: 500px;            height: 35px;            background-image: url(8.jpg);            background-size: 100% auto;            background-repeat: no-repeat;            filter: sepia(100%);             opacity: 0;                   }

filter: sepia(100%); 图片发黄。filter: invert(100%); 像X光底片。

4.实现扫描：

.tu:hover::after{            opacity: 1;            animation: move 1.8s linear infinite;        }        @keyframes move{            0%{                top: 0;                background-position: 6px 0px;             }            20%{                top: 60px;                background-position: -6px -60px;             }            40%{                top: 120px;                background-position: 6px -120px;             }            60%{                top: 180px;                background-position: -6px -180px;             }            80%{                top: 240px;                background-position: 6px -240px;             }            100%{                top: 300px;                background-position: -6px -300px;             }        }

让background-position的y轴位移刚好等于top的距离，然后x轴为0的话就不抖，有数值就会抖动。

完整代码：

<!DOCTYPE html><html lang="zh-CN"><head>    <meta charset="UTF-8">    <meta name="viewport" content="width=device-width, initial-scale=1.0">    <title>Document</title>    <style>        *{            margin: 0;            padding: 0;            box-sizing: border-box;        }        body{            height: 100vh;            display: flex;            justify-content: center;            align-items: center;            background-color: rgb(0, 0, 0);        }        .tu{            width: 500px;            height: 300px;            background-image: url(8.jpg);            background-size: 100% auto;            background-repeat: no-repeat;            position: relative;            overflow: hidden;            cursor: pointer;        }        .tu::after{            content: '';            position: absolute;            top: 0;            left: 0;            width: 500px;            height: 20px;            background-image: url(8.jpg);            background-size: 100% auto;            background-repeat: no-repeat;            filter: invert(100%);             opacity: 0;                   }        .tu:hover::after{            opacity: 1;            animation: move 1.8s linear infinite;        }        @keyframes move{            0%{                top: 0;                background-position: 6px 0px;             }            20%{                top: 60px;                background-position: -6px -60px;             }            40%{                top: 120px;                background-position: 6px -120px;             }            60%{                top: 180px;                background-position: -6px -180px;             }            80%{                top: 240px;                background-position: 6px -240px;             }            100%{                top: 300px;                background-position: -6px -300px;             }        }    </style></head><body>    <div class="tu"></div></body></html>