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3.21基本选择器与属性选择器
潮涌学习php的博客
Original
658 people have browsed it

这一节课学习了很多css选择器的知识。


实例

<!DOCTYPE html>
<html lang="en">
<head>
	<meta charset="UTF-8">
	<title>3.21作业</title>
	<style type="text/css">
		/*元素选择器（标签选择器）*/
		li {
			list-style:none;
			float:left;
			padding:10px;
		}
		/*id选择器*/
		#li-1 {
			background-color:skyblue;
		}
		/*类选择器*/
		.li-2 {
			background-color:yellow;
		}
		/*通配选择器*/
		div *{
			background-color: cyan;
		}
		/*父子选择器*/
		div ul li img {
			border:1px solid red;
		}
		/*子类选择器*/
		li > img{
			width:50px;}
		}
		/*相邻兄弟选择器*/
		.li-2 + li {
			background-color:blue;
		}
		/*全部兄弟选择器*/
		#li-3 ~ li {
			border:2px solid blue;
		}

	</style>
</head>
<body>
	<div>
		<ul>
			<li id="li-1"><img src="../images/11.jpg" ></li>
			<li class="li-2"><img src="../images/12.jpg" ></li>
			<li><img src="../images/13.jpg" ></li>
		</ul>
	</div>
	<div>
		<li id="li-3"><img src="../images/14.jpg" ></li>
		<li><img src="../images/15.jpg" ></li>
		<li><img src="../images/12.jpg" ></li>
		<li><img src="../images/13.jpg" ></li>
	</div>
</body>
</html>

运行实例 »

点击 "运行实例" 按钮查看在线实例

3.21-1.jpg

3.21-2.jpg

Correction status：qualified

Teacher's comments：作业已检查！ 完成的不错！大赞！！
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