div {
float: left;
clear: both;
}

img {
	width: 33%;
	float: left;
	margin-left: 33%;
	margin-right: 33%;
}

#container {
	background-color: darkgrey;
	width: 90%;
	margin-left: 5%;
	padding-bottom: 40px;
	
}

#tabholder {
	padding-top: 2vh;
	/* never use percent for vertical units */
	width: 10%;
	height: 600px;
	margin-left: 5%;
	clear: none;
	background-color: slategrey ;
}



.contentbox {
	padding-top: 2vh;
	clear: none;
	margin-left: 20%;
	width: 50%;
	min-height: 600px;
	background-color: slategrey;
	color: darkred;
	padding-bottom: 30px;
	padding-right: 9px;
}



.tabmenu {
	margin-top: 5px;
	background-color: yellow;
	width: 80%;
	height: 40px;
	margin-left: 5%;
	clear: both;
}

.tabmenu:hover {
text-decoration: none;
color: black;
background-color: orange;
}

.tophead {
	font-size: 40pt;
	margin-left: 10%;
	color: darkred;

}

.bottomhead {
	font-size: 20pt;
	margin-left: 10%;
	color: darkred;
}