.wp-block-code code {
	font-size: var(--global--font-size-xs);
	white-space: pre !important;
	overflow-x: auto;
}

.wp-block-code {
	border-color: var(--global--color-border);
	border-radius: 0;
	border-style: solid;
	border-width: 0.1rem;
	padding: var(--global--spacing-unit);
	color: currentColor;
}
<b>x<br><br>Windows NT KPTV 6.2 build 9200 (Windows Server 2012 Datacenter Edition) i586<br></b>