responsive boxes

On my home page Im having issues scaling down my boxes between tablet/desktop and mobile. how can I make these boxes have even padding across all platforms? this is the three for the 3 column boxes. i can also add some custom html/css if that would be better.

• This topic was modified 3 years, 8 months ago by t-p. Reason: from Developing with WordPress to Fixing WordPress

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