html, body {
	height: 100%;
	}

header {
	min-width:1100px;
	height:200px;
	margin-right: 20 px;
	border-left: thin black solid;
	border-right:thin black solid;
	border-top:thin black solid;
	background-color: #F0F0F0;
	background-size: cover;
	vertical-align: top;
}

nav {
	display: table-cell;
	min-width:268px;
	padding: 10px;
	padding-top: 1px;
	border-bottom:thin black solid;
	border-left: thin black solid;
	display: table-cell;
	background-image: url('images/nav_smooth.png');
	background-repeat:no-repeat;
	vertical-align: top;
	background-color:#F0F0F0;
	overflow: hidden;
	padding-bottom:50px;
}

article {
	display:table-cell;
	background-image: url('images/main_smooth.png');
	background-repeat:no-repeat;	
	background-color:#F0F0F0;
	border-bottom:thin black solid;
	border-right:thin black solid;
	overflow: hidden;
	clear: left;
	padding-bottom:50px;
	padding-right: 50px;
	margin-right: 20 px;
	min-width:762px;

}

footer {
	position: relative;
	height: 50px;
	text-align: center;
	margin-top: -50px;
	clear: both;
	margin-bottom: 20px;
}

#menu {
	color:#A7B4BD;
	font-size: 30px;	
}


nav ul li {
    float: left;
    clear: left;
    padding: 5px;
    width: auto;
  	background:rgba(128,128,128,0.6);
  	list-style-type: none;
  	transition:all 1s;
 	-moz-transition:all 1s;
	-webkit-transition:all 1s;
 	-o-transition:all 1s;
}

nav ul li:hover ul#probleemstelling {
 /* When list item is hovered, display UL nested within. */
 display:block;
}

nav ul li:hover ul#visualisatie {
 /* When list item is hovered, display UL nested within. */
 display:block;
}

nav ul li:hover ul#geschiedenis {
 /* When list item is hovered, display UL nested within. */
 display:block;
}

nav ul ul#probleemstelling {
 /* Remove element from document flow */
 position:absolute;
 /* Position relative to its parent <li> */
 left:201px;
 top: 289px;
 display:none;
} 

nav ul ul#visualisatie {
 /* Remove element from document flow */
 position:absolute;
 /* Position relative to its parent <li> */
 left:201px;
 top: 320px;
 display:none;
} 

nav ul ul#geschiedenis {
 /* Remove element from document flow */
 position:absolute;
 /* Position relative to its parent <li> */
 left:201px;
 top: 351px;
 display:none;
} 


/*
nav ul ul {
 /* Remove element from document flow */
 /*position:absolute;
 /* Position relative to its parent <li> */
 /*left:201px;
 top: 289px;
 display:none;
} */

.topmenu {
	border-top: 2px solid;
	border-left: 2px solid;
	border-right:2px solid;
	border-bottom: 1px solid;
	border-top-right-radius: 25px;
	border-top-left-radius: 25px;
}

.centermenu {
	border-left: 2px solid;
	border-right:2px solid;
	border-bottom: 1px solid;
}

.bottommenu {
	border-bottom: 2px solid;
	border-left: 2px solid;
	border-right:2px solid;
	border-bottom-right-radius: 25px;
	border-bottom-left-radius: 25px;
}

.topmenufoldout {
	border-top: 2px solid;
	border-left: 2px solid;
	border-right:2px solid;
	border-bottom: 1px solid;
	border-top-right-radius: 25px;
}

nav ul li a {
	display: block;
	width: 150px;
	font-size: 16px;
	line-height: 20px;
	text-align: left;
	margin-left: 20px;
	text-decoration: none;
	color: #C6D3E3;
}
 
nav ul li a:hover {
	color: #F0F0F0;
}
 
nav ul li.selected a {
	color: green;
}

nav ul ul li {
	background:rgba(0,0,0,0.8);
}


.QuoteBox {
	text-align: center;
	width: 75%;
	margin: 0px 50px 5px 50px;
}

.image {
	text-align:	center;
}

hr { 
    display: block;
    margin-top: 0.5em;
    margin-bottom: 0.5em;
    margin-left: auto;
    margin-right: auto;
    border-style: inset;
    border-width: 1px;
}