JavaScript下拉菜单
* {
padding:0;
margin:0;
}
body {
font-family:verdana, sans-serif;
font-size:small;
}
#navigation, #navigation li ul {
list-style-type:none;
}
#navigation {
margin:40px;
}/*可有可无属性,是内容与边的距离*/
#navigation li {
float:left;
text-align:center;
position:relative;/*position:relative一定要写,是下面