#nav {
    display: flex;
    justify-content: space-around;
    padding: 0px 10px;
    background: url(images/menu-bg.png) repeat-x;
    font-size: 14px;
    border-radius: 5px;
}

#nav li {
    position: relative;
    list-style: none;
}

#nav>li {
    padding: 10px 0px;
}

#nav li a {
    color: #FFF;
    text-decoration: none;
}

#nav a:hover {
    color: #000;
}

.menu,
.sub-menu {
    display: none;
    position: absolute;
    width: 180px;
    z-index: 1000;
    padding: 0px;
    border: 1px solid #000;
    border-top: none;
}

li:hover>.menu {
    display: block;
}

.menu>li:hover>.sub-menu {
    display: block;
}

.menu li a,
.sub-menu li a {
    position: relative;
    display: block;
    padding: 10px;
    background: url(images/menu-bg.png) repeat-x;
    border-top: 1px solid #000;
    box-sizing: border-box;
}

.menu:hover,
.sub-menu:hover {
    display: block;
}

.menu ul:first-child,
.sub-menu ul:first-child {
    border-top: none;
}

li:hover>.menu {
    top: 100%;
    left: 0px;
}

.menu li:hover .sub-menu {
    top: 0px;
    left: 100%;
}