body{margin:40px auto;
	max-width:850px;
	line-height:1.4;
	font-size:20px;
	color:#444;
	background-color: #F9E79F ;
	padding:0 10px}

h1{line-height:1.2; text-align:center}
h2,h3{line-height:1.2; border-bottom: 1px solid;}
pre,blockquote,.signature{	
	background: #eee8d5;
	padding: 1em}
blockquote,.signature{	
	font-style: italic;
	margin: 2em 1em}

code{
	background-color: darkgrey;
	font-family: sans-serif;
	color: whitesmoke;
}

table{
  border-collapse: collapse;
}

th, td{
  border: 1px solid black;
  padding: 10px;
} 

a { color:#169; text-decoration:none; padding:0.5em 0;}
a:hover { text-decoration:underline;}
.center {
  display: block;
  margin-left: auto;
  margin-right: auto;
  width: 60%;
}

.subtitle {text-align: center; font-style: italic;}
.navbar{
	display: flex;
	align-items: center;
	justify-content: space-between;
	flex-direction: row;
	text-align: center;
	font-variant: small-caps;
	font-weight: bold;
}
.horizontal { 
	text-align: center; 
	padding:10px 40px;
}
.horizontal li {
	display: inline-block; 
	margin: 0 0.5em;
}
.img {
	text-align: center;
	}
#scroll_to_top {
	position: fixed;
	bottom: 32px;
	right: 32px;
}
#scroll_to_top img {
	width: 64px;
	height: 64px;
}
#back_home {
	position: fixed;
	bottom: 32px;
	left: 32px;
}
#back_home img {
	width: 64px;
	height: 64px;
}