Jq實現下拉菜單

#nav {color:#FFF;margin-top: 5px;} #nav > li{float:left;width:auto;margin-left: 20px;position: relative;} #nav > li > a{display: block; padding: 12px 8px 15px 8px;line-height: 26px;font-size: 16px;col

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