Hey @Hugepickle I posted the other-day about spacing between input fields here:-
As for including a drop-down, just bookmark this site www.poshud.com and you will see nice examples for everything like:- https://poshud.com/New-UDSelect
If you want to be able to have multiple selections then check out this component I released here:-
Ironman Software Marketplace - UniversalDashboard.UDSelector
I hope this helps you in your journey with UD. Peace