Spearhead: add styles for product page

spearhead/assets/sass/block-extends/_woocommerce.scss

@@ -3,6 +3,7 @@ body[class*="woocommerce"] #page {
 		.primary-navigation {
 			flex-basis: 50%;
 		}
+
 		.woo-navigation {
 			flex-direction: row;
 			padding-left: 1.2em;