css3与html5实现响应式导航菜单(导航栏)效果分享

/* on nav hover */
.nav ul:hover {
background-image: none;
}
.nav ul:hover li {
display: block;
margin: 0 0 5px;
}
.nav ul:hover .current {
background: url(images/check.png) no-repeat 10px 7px;
}

/* right nav */
.nav.right ul {
left: auto;
right: 0;
}

/* center nav */
.nav.center ul {
left: 50%;
margin-left: -90px;
}
}