html, body {
height: 100%;
margin: 0px;
}

#header {
height: 100px;
background-color: cornflowerblue;
color: black;
line-height: 100px;
text-align: center;
}

#nav {
line-height: 30px;
background-color: gainsboro;
height: calc(100% - 130px);
width: 100px;
float: left;
}

#nav a {
	text-align: center;
	display:block;
	background-color: lightgoldenrodyellow;
	color: black;
	padding: 10px;
	text-decoration: none;
}

#nav a:hover {
	background-color: #BBB;
	color: #fff;
}

#main {
width: 600px;
padding: 20px;
float: left;
}

#footer {
height: 30px;
background-color: cornflowerblue;
color: black;
padding: 10px;
text-align: center;
clear: both;
}

.caption {
background-color: lightgoldenrodyellow;
color: black;
text-align: right;
font-family: arial, sans-serif;
font-size: 12px;
padding: 5px;
}

.caption a {
color: black;
}