fixing closing button behaviour

assets/js/main.js

@@ -298,7 +298,8 @@
 
 				// Handle the × button click
 					$this.find('button.close').on('click', function(event) {
-						event.stopPropagation(); // Prevent the click from bubbling to the article
+						event.preventDefault();
+						event.stopPropagation();
 						location.hash = '';
 					});