/**公共样式,覆盖menu所引起的样式冲突*/
.panel {
    padding: 0px !important;
}
ul.dropdown-menu {
    border: none;
    background-color: #fff !important; 
}
ul.dropdown-menu li a {
    padding: 3px 10px !important;
    margin: 0 5px;
    color: #333;
    font-size: 13px;
}