don't mark visited on menu

assets/css/style.css

@@ -124,6 +124,9 @@ a.pure-button-primary {
 .home-menu .pure-menu-selected a {
     color: #817F7F;
 }
+.pure-menu-selected > .pure-menu-link, .pure-menu-selected > .pure-menu-link:visited {
+    color: #817F7F;
+}
 
 .home-menu a {
     color: #c33541;