添加bottom:100%
到您的#menu:hover ul li:hover ul
规则
#menu:hover ul li:hover ul {
position: absolute;
margin-top: 1px;
font: 10px;
bottom: 100%; /* added this attribute */
}
使用纯CSS向上/向上打开的下拉菜单
添加bottom:100%
到您的#menu:hover ul li:hover ul
规则
#menu:hover ul li:hover ul {
position: absolute;
margin-top: 1px;
font: 10px;
bottom: 100%; /* added this attribute */
}