Index: wordpress.org/public_html/wp-content/themes/pub/wporg-main/css/objects/_site-header.scss
===================================================================
--- wordpress.org/public_html/wp-content/themes/pub/wporg-main/css/objects/_site-header.scss	(revision 12362)
+++ wordpress.org/public_html/wp-content/themes/pub/wporg-main/css/objects/_site-header.scss	(working copy)
@@ -18,6 +18,10 @@
 			@include breakpoint( $ms-breakpoint ) {
 				font-size: ms( 12 );
 			}
+			
+			@media screen and (max-width: 375px ) {
+				font-size: 2.814697rem;
+			}
 		}
 
 		.site-description {