body{
	margin-left: auto;
	margin-right: auto;
	margin-top: auto;
	margin-bottom: auto;
	background-color: gray;
	color: white;
	height: relative;
	font-family: Lucida Console;
}
div.container{
	width: 100%;
	height: 100%;
}
div.header{
	width: 150px;
	background-color:#333;
	float: left;
	height: 300px;
} 
div.header  h1{
	color: white;
	text-align: center;
}
a.redsie{
	text-decoration: none;
}
div.main-box{
	width: 500px;
	background-color:#f10505;
	float: right;
	height: 300px;
	position: relative;
} 
ul{
	list-style-type: none;
	margin: 0;
	padding: 0;
	overflow: hidden;
}
li.d {
	float: center;
	position: relative;
}
li a{
	display: block;
	color: white;
	text-align: center;
	padding: 6px 12px;
	text-decoration: none;
}
li a:hover{
	background-color: red;
}
div.drop{
	width: 150px;
	overflow: auto;
	cursor: pointer;
}
div.drop-menu{
	display: none;
	position: absolute;
	background-color: #333;
	z-index: 1;
	width: 150px;
}
div.drop:hover div.drop-menu{
	display: block;
}
div.drop:hover div.invis{
	visibility: none;
}