nav ul {
	background: #111;
	padding: 0 0px;
	list-style: none;
	position: relative;
	width: 100%;
	font-family: 'helvetica', arial;
}

nav ul:after{
	content: "";
	clear: both;
	display: block;
}

nav ul li {
	float: left;
}

nav ul li:hover {
	background-color: #222;
}

nav ul li a {
	display: block;
	padding: 20px 30px;
	text-decoration: none;
	color: #fff;
}
nav ul li a:hover{
	color: #fff;
}

nav ul ul {
	display: none;
	background: #111;
	padding: 0;
	position: absolute;
	top: 100%;
	max-width: 300px;
	width: auto;
}

nav ul ul li {
	float: none; 
	border-bottom: 1px solid rgba(0,0,0,.2);
	position: relative;
}

nav ul li:hover > ul {
	display: block;
}

nav ul ul li a {
	padding: 10px 40px;
	color: #fff;
}	
nav ul ul li a:hover {
	background: #222;
}

nav ul ul ul {
	position: absolute;
	left: 100%;
	top:0;
	width: 200px;
}