Hiding row on ipad

Hi, few weeks ago you gave me a class to set up in order to hide columns on phone (hide_on_phone). It works but it does not delete rows on ipad (orizontal view). How can I fix this problem?

have a look from an ipad if you can: http://touchsystems.co.uk/top-business-management-software-tools/

before the call to action in blue LEARN MORE ABOUT OUR COMPANY, there is a grey background visible that I used in a row. How can I delete it?