fix animation

Author: thabofletcher

assets/css/layout/header.scss

@@ -372,9 +372,19 @@
       line-height: 54px;
     }
 
+    .menu-item .submenu {
+      overflow: hidden;
+      max-height: 0px;
+      transition: all .25s ease-in-out;
+    }
+
+    .menu-item:hover .submenu {
+      max-height: 500px;
+    }
+
     // Expand the submenu only when hovering on header or submenu itself or if submenu is marked with .expanded
     .menu-item:not(:hover) .submenu:not(.expanded):not(:hover) {
-      display: none;
+      padding: 0px 54px 0px 54px;
     }
 
     .menu-link:hover {