老师 我的代码还有什么需要改进的吗
来源：2-9 编程练习
慕仙0240544
2022-06-24 15:50:00
<!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 type="text/css">
a{text-decoration:none;}
ul{list-style:none;}
div{
background-image:url("http://climg.mukewang.com/582c37e50001b08102000065.jpg");
width:100px;height:100px;
display:none;
border:2px solid red;
background-repeat:no-repeat;
}
.length h3:hover+div {
display: block;
background-size: 100px 100px;
}
.percent h3:hover+div {
display: block;
background-size: 50% 50%;
}
.cover h3:hover+div {
display: block;
background-size: cover;
}
.contain h3:hover+div {
display: block;
background-size: contain;
}
</style>
</head>
<body>
<h2>background-size不同属性值不同效果</h2>
<ul>
<li class="length">
<h3><a href="">100px 100px</a></h3>
<div></div>
</li>
<li class="percent">
<h3><a href="">50% 50%</a></h3>
<div></div>
</li>
<li class="cover">
<h3><a href="">cover</a></h3>
<div></div>
</li>
<li class="contain">
<h3><a href="">contain</a></h3>
<div></div>
</li>
</ul>
</body>
</html>
1回答
-
好帮手慕久久
2022-06-24
同学你好，代码正确，不需要优化了，祝学习愉快！
0
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