View source for MediaWiki:Cosmos.css

/* All CSS here will be loaded for users of the Cosmos skin */
#cosmos-banner {
	position: static !important;
}
.ns-3002,.ns-3003 {
	background-image: url(https://yume.wiki/images/1/1c/2kki-bg-image.png);
}

.ns-3002 #mw-content, .ns-3003 #mw-content {
	background-color: #dfdbc3;
}

.ns-3002 #mw-content a:not(.new), .ns-3003 #mw-content a:not(.new) {
	color: #7f2d3d;
}

.ns-3002  #mw-content a:not(.new):hover, .ns-3003 #mw-content a:not(.new):hover {
	color: #331218;
}

.ns-3016, .ns-3017 {
	background: #180C29;
}
Description	What you type	What you get
Italic	''Italic text''	Italic text
Bold	'''Bold text'''	Bold text
Bold & italic	'''''Bold & italic text'''''	*Bold & italic text*