* {
	box-sizing: border-box;
}

header, main, nav, article, aside, footer {
	display: block;
}

html {
	font-size: 62.5%;
}

body{
	margin: 0 auto;
	background-image: url('lightpaperfibers/lightpaperfibers_@2X.png'); /* Background pattern from Toptal Subtle Patterns */
	color: rgb(46, 46, 46);
	font-size: 1.6rem;
	font-family: 'PT Serif', serif;
	/* font-family: 'Playfair Display', serif; */
}

/*===================================================================*/

header {
	width: 100%;
	height: 16vh;
	background-color: rgb(214, 214, 209);
	font-family: 'Playfair Display', serif;
	text-align: center;
	line-height: 16vh;
	font-size: 6rem;
	text-shadow: 1px 1px 2px rgb(0, 0, 0, 0.5);
}

main {
	width: 80%;
	height: 74vh;
	margin: 0 auto;
}

nav {
	float: left;
	width: 20%;
	height: 100%;
	background-image: linear-gradient(to right, rgb(244, 244, 239), rgb(237, 237, 232));
	text-align: center;
}

article {
	float: left;
	width: 60%;
	height: 100%;
}

aside {
	float: left;
	width: 20%;
	height: 100%;
	background-image: linear-gradient(to left, rgb(229, 229, 224), rgb(236, 236, 231));
	padding: 2rem;
}

aside img {
	width: 100%;
	display: block;
	margin: auto;
}

footer {
	clear: both;
	width: 100%;
	height: 10vh;
	background-color: rgb(184, 184, 179);
	text-align: center;
	line-height: 10vh;
	font-size: 2rem;
	text-shadow: 1px 1px 2px rgb(0, 0, 0, 0.5);
}

iframe {
	width: 100%;
	height: 100%;
	border: none;
}

header > img#img_lt_h {
	position: absolute;
	top: 0;
	left: 0;
	height: 16vh;
	width: 35%;
}
header > img#img_rt_h {
	position: absolute;
	top: 0;
	right: 0;
	height: 16vh;
	width: 30%;
}

header > span#header_text {
	position: relative;
}

main > nav > section#nav_buttons {
	width: 100%;
	height: 100%;
	overflow-y: auto;
}

main > nav > section#nav_buttons > div.button {
	border-top: 0.1rem outset rgb(195, 195, 195);
	padding: 1.4rem 1.4rem;
	color: rgb(110, 110, 110);
}

main > nav > section#nav_buttons > div.button:first-child {
	border-top:none;
}

main > nav > section#nav_buttons > div.button:hover {
	background-color: rgb(195, 195, 195);
	color: rgb(46, 46, 46);
}