:root {
	--bg: #f6f6f6;
	--fg: black;
	--fg-link: #137752;
}

/* global */
body {
	margin: 0;
	padding: 0;
	background: var(--bg);
	color: var(--fg);
	/* font-family: serif; */
	font-size: 16px;
	line-height: 1.2;
}

/* header */
header {
	padding: 20px;
	/* border-bottom:1.5px solid var(--fg-link); */
}

header h1 {
	margin: 0;
	font-size: 35px;
	font-weight: normal;
	/* font-style: italic; */
}

header h1 a {
	color: var(--fg);
	text-decoration: none;
}

/* sidebar */
#side-bar {
	position: absolute;
	top: 100px;
	left: 0;
	width: 200px;
	padding-left: 20px;
}

.side-title {
	font-size: 25px;
	margin: 20px 0 8px 0;
	color: var(--fg);
}

#side-bar ul {
	margin: 0 0 0 20px;
	padding: 0px;
	list-style: none;
}

#side-bar li {
	margin: 6px 0;
}

/* links */
a {
	color: var(--fg-link);
	text-decoration: none;
	padding: 1px 2px;
}

a:hover {
	background: var(--fg);
	color: var(--bg);
}

/* article */
article {
	margin: 80px 0 0 0;
	max-width: 800px;
}

article img {
	max-width: 800px;
}

article h1 {
	border-bottom:1.5px solid var(--fg-link);
}

h2 {
	font-weight: normal;

}

h3 {
	font-weight: normal;
	font-style: italic;
}

/* footer */
footer {
	padding-top: 80px;
	font-style: italic;
	font-size: 17px;
}

/* article + footer alignment */
article, footer {
	margin-left: 240px;
	margin-top: 0px;
}