h3 {
	text-decoration: underline; 
}

pre.screen {
	color: black;
	background: lavender;
	margin-top: 0.2em;
 	margin-bottom: 0.2em;
	margin-left: 2em;
	margin-right: 2em;
	padding: 1ex;
}

th {
	background: lightgrey;
}