* {
	padding: 0px;
	margin: 0px;
}
#header{
	border-radius: 5px;
	margin: auto;
	widows: 500px;
	font-family: Arial, Helvetica, san-serif
}
ul, ol{
	list-style: none;
}
.nav li a {
	background-color: #000;
	color: #fff;
	text-decoration: none;
	padding: 10px 15px;
	display: block;
}
.nav li a:hover{
	background-color: #434343;
}
.nav > li{
	float: left;
}
.nav li ul{
	display: none;
	position: absolute;
	min-width: 140px;
}
.nav li:hover > ul{
	display: block;
}
.nav li ul li{
	position: relative;
}
.nav li ul li ul{
	right: -140px;
	top: 0px;
}