<ul>
<li class="current"><a href="#">首頁</a></li>
<li><a href="#">客戶服務(wù)</a></li>
<li><a href="#">產(chǎn)品展示</a></li>
<li><a href="#">經(jīng)典案例</a></li>
<li><a href="#">聯(lián)系我們</a></li>
</ul>

.nav {
position: relative;
margin: 20px 0;
}
.nav ul {
margin: 0;
padding: 0;
}
.nav li {
margin: 0 5px 10px 0;
padding: 0;
list-style: none;
display: inline-block;
}
.nav a {
padding: 3px 12px;
text-decoration: none;
color: #999;
line-height: 100%;
}
.nav a:hover {
color: #d0d0d0;
}
.nav .current a {
background: #999;
color: #fff;
border-radius: 5px;
}
使用text-align對菜單進行右對齊和居中對齊。

/* right nav */
.nav.right ul {
text-align: right;
}

/* center nav */
.nav.center ul {
text-align: center;
}

@media screen and (max-width: 600px) {
.nav {
position: relative;
min-height: 40px;
}
.nav ul {
width: 180px;
padding: 5px 0;
position: absolute;
top: 0;
left: 0;
border: solid 1px #aaa;
background: #fff url(images/menu.png) no-repeat 10px 11px;
border-radius: 5px;
box-shadow: 0 1px 2px rgba(0,0,0,.3);
}
.nav li {
display: none; /* hide all items */
margin: 0;
}
.nav .current {
display: block; /* show only currentitem */
}
.nav a {
display: block;
padding: 5px 5px 5px 32px;
text-align: left;
}
.nav .current a {
background: none;
color: #666;
}

/* 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;
}
}