Dropdown

Custom trigger

Important:
If you use a button element as custom trigger, use target as the value for the popovertarget attribute.

For all other elements, use the togglePopover function.

matchTriggerWidth

Hide popover

triggerAlign

Defines the direction of the trigger.

Possible values	Default value
horizontal, vertical	horizontal

popover events

Scrolling

Show scrolling icons (could be changed...)