@media only screen and (max-width: 760px) {
	body {
		background: #e1e1e1;
		margin:20px;
		margin-bottom:20px;
	}
}
@media only screen and (min-width: 761px) {
	body {
		background: #e3e3e3;
		width: 80%;
		margin: auto;
		margin-bottom:50px;
	}
	.blockquote {
		font: italic Times, serif;
		background-color: #f1f1f1;
		border: 1px solid #ddd;
		margin: auto;
		width: 80%;
		background-position: top left;
		background-repeat: no-repeat;
		padding: 20px;
	}
}

h1 { 
	font-size: 200%;
	border-bottom: darkslategray 1px solid;
}

div.demo {
	background-color: white;
	border: solid black 1px;
	border-radius: 8px;
	margin-left:auto;
	margin-right:auto;
	margin-top:20px;
	margin-bottom:20px;
	
}
.it {
	font-style: italic
}
pre {
	background:white;
	border:solid 1px black;
	padding: 5px;
}