Template:Block/styles.css

.inline-text-blocked,
.inline-text-blocked:hover,
.inline-text-blocked:focus,
.inline-text-blocked a,
.inline-text-blocked a:hover,
.inline-text-blocked a:focus {
	color: transparent;
	cursor: default;
}
.inline-text-blocked::selection,
.inline-text-blocked a::selection {
	color: white;
	background: #0645ad;
}