Dalston: Update screenshot to match demo, fix mobile view for project column block style

dalston/block-extends/extend-columns-block.css

@@ -67,7 +67,7 @@
 
 .wp-block-columns.is-style-project.alignfull {
 	padding-left: 16px;
-	padding-right: 0;
+	padding-right: 16px;
 }
 
 @media (min-width: 600px) {