This is a great little snippet to add phone numbers into the topbar and when displayed in mobile are centered and on seperate lines so everything looks nice.

Tel: 0800 123 4567 Mobile: 07777 123 456

HTML

<p style="text-align: center;">
	<span style="font-size: 24pt;">
		<span style="display: inline-block; white-space: nowrap; margin-top: 5px;">Tel: 0800 123 4567</span>  <span style="display: inline-block; white-space: nowrap; padding-top: 5px;">Mobile: 07777 123 456</span>
	</span>
</p>