.main {
	height:500vh;
	padding-top:10px;
	border-top: black 2px dashed;
	border-bottom: black 2px dashed;
	background-color:beige;
	overflow:scroll;
}
#explanation {
	background-color:#dcf4f5;
	margin-top:100px;
}
.indented {
	margin-left:30px;
}