css3实现的下拉菜单效果示例

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<style type="text/css">
body
{
background: #efefef;
font-family:Verdana;
}
nav ul ul
{
display: none;
}
nav ul li:hover > ul
{
display: block;
}</p> <p>nav ul
{
background: #efefef;
background: linear-gradient(, #efefef 0%, #bbbbbb 100%);
background: -moz-linear-gradient(, #efefef 0%, #bbbbbb 100%);
background: -webkit-linear-gradient(, #efefef 0%,#bbbbbb 100%);
box-shadow: 0px 0px 9px rgba(0,0,0,0.15);
padding: 0 20px;
border-radius: 10px;
list-style: none;
position: relative;
display: inline-table;
}
nav ul:after
{
content: "";
clear: both;
display: block;
}</p> <p>nav ul li
{
float: left;
}
nav ul li:hover
{
background: #4b545f;
background: linear-gradient(, #4f5964 0%, #5f6975 40%);
background: -moz-linear-gradient(, #4f5964 0%, #5f6975 40%);
background: -webkit-linear-gradient(, #4f5964 0%,#5f6975 40%);
}
nav ul li:hover a
{
color: #fff;
}
nav ul li a
{
display: block;
padding: 5px 40px;
color: #757575;
text-decoration: none;
}</p> <p>nav ul ul
{
background: #5f6975;
border-radius: 0px;
padding: 0;
position: absolute;
: 100%;
}
nav ul ul li
{
float: none;
border-: 1px solid #6b727c;
border-bottom: 1px solid #575f6a;
position: relative;
}
nav ul ul li a
{
padding: 5px 40px;
color: #fff;
}
nav ul ul li a:hover
{
background: #4b545f;
}
nav ul ul ul
{
position: absolute;
left: 100%;
: 0;
}
</style>