Code for add css only to phone or/and tablet

if i want to add a specific css codejust on a specific class of device (for example just ipad/tablet) which code i have to use?

for example, as u can see, on my ipad i have different lenght for the service section, but, on the pc, i see them exactly of the same lenght.

thank u for uor support!


This discussion has been closed.