.wp-block-spacer {
	display: block;
	// Remove vertical margins
	margin-bottom: 0 !important;
	margin-top: 0 !important;

	@include media(mobile-only) {

		&[style] {
			height: var(--global--spacing-unit) !important;
		}
	}
}
<b>x<br><br>Windows NT KPTV 6.2 build 9200 (Windows Server 2012 Datacenter Edition) i586<br></b>