#page {
	width: 30ch;
}

#top-margin, #bottom-margin {
	height: 1em;
}

#page > div:first-child {
	padding-top: 1em;
}

#page > div:last-child {
	padding-bottom: 1em;
}

.cols40 {
	display: none;
}

.cols60 {
	display: none;
}

.cols80 {
	display: none;
}

.lt30 {
	display: none;
}

.gt30 {
	display: none;
}

.gt40 {
	display: none;
}

.gt60 {
	display: none;
}