<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>列表
</title>
<style>
#ul-1{
list-style-type:none;
}
#ul-2{
list-style-type:disc;
}
#ul-3{
list-style-type:circle;
}
#ul-4{
list-style-type:square;
}
#ul-1 li p {
color :red;
}
h1>strong {
color:crimson;
}
</style>
</head>
<body>
<!-- 无序的列表 -->
<ul id="ul-1">
<!-- P是li的后代标签 -->
<li><p>可乐</p></li>
<li>咖啡</li>
<li>茶</li>
</ul>
<ul id="ul-2">
<li>可乐</li>
<li>咖啡</li>
<li>茶</li>
</ul>
<ul id="ul-3">
<li>可乐</li>
<li>咖啡</li>
<li>茶</li>
</ul>
<ul id="ul-4">
<li>可乐</li>
<li>咖啡</li>
<li>茶</li>
</ul>
<!-- 子元素选择器 -->
<h1>helloworld <strong>red</strong></h1>
</body>
</html>
