How to alter the height of the dropdown menu, Dolphin 6.0.004

There is a mod from mrpowless on expertzzz which arranges the hidden menu from horizontal to vertical alignment

Thanks for your advice. What I want is to keep the dropdown as it is, but instead of a large dropdown I want a short.

This is how it looks today:
Example:
"Members"
All members Online Search...

This is how I want it to look like
"Members" / All members Online Search...

By this way it should fit much better to my layout

/aliwin