CSS margin top? Margin bottom?

Can anyone tell me how to get rid of the space between tables on this site please?

colorlib dot com/etc/tb/Table_Highlight_Vertical_Horizontal/

It’s important to see that the class .mg-b-110 has the property of margin-bottom: 110px. If you’re looking to get rid of the space between all of the tables, that is what you will have to change.

It might be worth your while to look at using the inspect element for your browser. This should give you a better understanding of everything that is going on with all of the elements of your browser!