Need parameter for spacing between submenu items

Hello! I've attached an image of my menu.
I'm looking for the parameter that sets the spacing between submenu items.

Thanks!
Lisa W.

Hi
I don't see any image ...
CEd

Woops, sorry!

ok I see, thanks. Please give me the url of your page so that I can check the code

Here you go: austinreptileservice.net/joomla

I'd love to know your process for figuring out how to fix this issue... helps me to learn!

Thanks!
Lisa W.

ok, first : this is not an issue this is just a need of design
to debug I simply use the web console of my browser (Firefox) to see the existing styles

Then go in the styling interface >> submenu >> submenu link >> set the padding and margin to 0
this will reduce the space because currently you have some padding and some margin