Gadget-breadcrumbs.css

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@media only screen and (min-width: 999px) {
	
	#breadcrumbs {
		font-weight: bold;
	}
	
	#breadcrumbs a::after {
	    content: " > ";
	    text-decoration: none;
	    color: initial;
	    cursor: auto;
	}
	
	#breadcrumbs a:hover {
		text-decoration:none;
	}
	
	#breadcrumbs a span:hover {
		text-decoration:underline;
	}
	
	#breadcrumbs > span { /*selflink styles for the last crumb (current page name)*/
		color: inherit;
		font-weight: bold;
		text-decoration: inherit;
		cursor: default;
	}
	
}

MediaWiki

Gadget-breadcrumbs.css