<html>
<head>
<style>
/* 默认的 CSS 值 */
ul {
display: block;
list-style-type: disc;
margin-top: 1em;
margin-bottom: 1em;
margin-left: 0;
margin-right: 0;
padding-left: 40px;
}
</style>
</head>
<body>
<p>默认情况下,ul 元素会这样显示:</p>
<ul>
<li>Coffee</li>
<li>Tea</li>
<li>Milk</li>
</ul>
<p>请更改默认 CSS 设置,来查看效果。</p>
</body>
</html>