CSS I used for OBS to make chunkbase map show up without ads and other extras.

OBS-chunkbase.css

/* Remove the top and just get right to the Seed Map */
#pageheader {
	display:none;
}

/* Remove ads */
.adthrive-ad, .adthrive, .adthrive-footer {
	display: none;
}

/* Don't show the seed but do show goto X,Y */
div.fancy-row:first-of-type { display:none; }
div.fancy-row.slim:first-of-type {display: block }

/* Make the app take up the full width of the display */
div#content, div#main-content, div#main {
	margin: 0 0;
	width: 100%;
	max-width: 100%;
}
#main.wide .box {
	max-width: 100%;
}

/* Don't show any boxes but the seed map */
aside.box {
	display: none;
}