过渡与动画2-9自由编程作业提交

来源：2-9 自由编程

慕越秀工地

2022-04-18 11:49:18

老师你好，这个作业我无法做到和演示效果一样，文字的背景向上滑动的效果。请赐教。

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <style>
        * {
            margin: 0;
            padding: 0;
        }
        .box {
            width: 300px;
            height: 240px;
            overflow:hidden;
            position: relative;
        }
        .box p {
            position: absolute;
            top:210px;
            width: 290px;
            height: 30px;
            line-height: 30px;
            padding-left:10px;
            color: white;
            background-color: rgba(0,0,0,.5);
            opacity: 0;
            transition: opacity 1s linear 0s;
        }
        .box:hover p {
            opacity: 1;

        }
    </style>
</head>
<body>
    <div class="box">
        <img src="images/duck.png" alt="">
        <p>这是一只小黄鸭</p>
    </div>
</body>
</html>

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