.sidebar-nav {padding: 9px 0;}
.dropdown-menu .sub-menu {left: 100%;position: absolute;top: 0;visibility: hidden;margin-top: -1px;}
.dropdown-menu li:hover .sub-menu {visibility: visible;}
.dropdown:hover .dropdown-menu {display: block;}
.nav-tabs .dropdown-menu, .nav-pills .dropdown-menu, .navbar .dropdown-menu {margin-top: 0;}
.navbar .sub-menu:before {border-bottom: 7px solid transparent;border-left: none;border-right: 7px solid rgba(0, 0, 0, 0.2);border-top: 7px solid transparent;left: -7px;top: 10px;}
.navbar .sub-menu:after {border-top: 6px solid transparent;border-left: none;border-right: 6px solid #fff;border-bottom: 6px solid transparent;left: 10px;top: 11px;left: -6px;}