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

.dropdown-submenu {
    position: relative;
}

    .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;
        border-radius: 0 6px 6px 6px;
    }

    .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: #000;
        margin-top: 5px;
        margin-right: -10px;
    }

    .dropdown-submenu:hover > a:after {
        border-left-color: #fc3;
    }

    .dropdown-submenu > a:focus::after {
        border-left-color: #fc3;
    }

@media (max-width:480px) {
    .dropdown:hover > .dropdown-menu {
        display: block;
        position: absolute;
        padding-left: 10px;
    }
}