/* 自定义多级下拉菜单样式 */
    #navbarEight {
        font-size: 18px;
    }
    .dropdown-menu {
        top: 70%;
    }
    .dropdown-submenu {
        position: relative;
    }
    .header .tags li.dropdown-submenu {
        padding-left: 0px;
    }
    .header .tags li.dropdown-submenu-li {
        padding-left: 0px;
    }
    .dropdown-menu>li>a {
        padding: 6px 20px;
    }
    .dropdown-submenu > .dropdown-menu {
        top: 0;
        left: 100%;
        margin-top: -6px;
        margin-left: -1px;
        -webkit-border-radius: 0 6px 6px 6px;
        -moz-border-radius: 0 6px 6px 6px;
        border-radius: 0 6px 6px 6px;
    }

    .dropdown:hover > .dropdown-menu {
        display: block;
    }

    .dropdown-submenu:hover > .dropdown-menu {
        display: block;
    }

    .dropdown-submenu > a:after {
        display: block;
        content: " ";
        float: right;
        width: 0;
        height: 0;
        border-color: transparent;
        border-style: solid;
        border-width: 5px 0 5px 5px;
        border-left-color: #cccccc;
        margin-top: 5px;
        margin-right: -10px;
    }

    .dropdown-submenu:hover > a:after {
        border-left-color: #ffffff;
    }

    .dropdown-submenu.pull-left {
        float: none;
    }

    .dropdown-submenu.pull-left > .dropdown-menu {
        left: -100%;
        margin-left: 10px;
        -webkit-border-radius: 6px 0 6px 6px;
        -moz-border-radius: 6px 0 6px 6px;
        border-radius: 6px 0 6px 6px;
    }

    /* 移动设备适配 */
    @media (max-width: 768px) {
        .dropdown-submenu > .dropdown-menu {
            position: static;
            margin-top: 0;
            margin-left: 10px;
        }
        .navbar-toggler {
            position: relative;
            float: right;
            margin: 29px 15px 29px 0;
            background: rgba(0, 0, 0, 0) none repeat scroll 0 0;
            border: none;
            outline: none;
        }
    }