Buttons in web-view stick to each other

Hi all,

When switching with the Orfeo theme to the mobile view, the buttons on the landing page somehow stick together. I’d like to have some margin there, but I cannot find where to edit it. I tried to add the “margin-bottom” css code to various css elements which contain the button, but there is no effect.

Does anybody have the experience on where to add that in this theme?

Thanks a lot!

The page I need help with: [log in to see the link]