[website] fix css problem on languages menu
### Problem
The languages menu is not displayed properly.
### Changes
Add language menu to custom css file.
/* for drop down menus */
#community-dropdown.hide,
-#apache-dropdown.hide {
+#apache-dropdown.hide,
+#languages-dropdown.hide {
display: none;
}
#community-dropdown.visible,
-#apache-dropdown.visible {
+#apache-dropdown.visible,
+#languages-dropdown.visible {
display: flex;
}
#community-dropdown,
-#apache-dropdown {
+#apache-dropdown,
+#languages-dropdown {
pointer-events: none;
position: absolute;
width: 100%;
}
#community-dropdown-items,
-#apache-dropdown-items {
+#apache-dropdown-items,
+#languages-dropdown-items {
background-color: white;
display: flex;
flex-direction: column;
