<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "
http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd
"><html xmlns="
http://www.w3.org/1999/xhtml
"><head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>abc</title>
<link type="text/css" rel="stylesheet" href="t.css" />
</head>
<body>
<ul><li>bcd</li></ul>
</body>
------------
t.css中内容如下：
@charset "utf-8";
/* CSS Document */
ul,li{margin:0px;}
怎么这样列表项前的小圆点就不见了？而改为margin:1px; 后小圆点又出来了？
