Menu Grid Spacing Between elements (Log / Nav / Side Elements)

Hi!

We're trying to resize the grid columns for log / nav / other elements, but I see that there are more complex / nested CSS rules that we espected. I didn't find a solution. The scope is prevent what you see in the images attached (menu goes on two lines when screen is at certain size, even if there is a lot of space that is unnecessarily unitilized). 

Anyone have done this before or can help? 

This can be changed with CSS, but what do you want to change? Can you share your website URL?