Adding a 4th service and keeping format in a single line

Hello, I’ve been trying to add a 4th service in the service section of the onetone theme but I’m having a little problem.

I’ve successfully split the section to a 4 column layout ( used the one_fourth & one_fourth last div class ), but now the spacing between the text of each of the 4 services is very close to each other, concentrated in the middle of the page.

Adding more space ( margin ) to the one_fourth and one_fourth last entries in style.css puts the 4th service under the 3 services.

I guess somewhere in the css files there’s an entry limiting the area available for the table of the services section, right ?

Could you please help me out ?

Thank you!