Mobile backround changing

hi everyone,

check this page out: http://www.aquariumjunkiescanada.com/chrisnuvo16

on a broweser the theme backround is being overwriten by:

body.page-id-423 {
background-color: #d6f0ff !important;
}

when you inspect the page the mobile theme wraps everything in a container or something, how can i change that container aswell from the style page?

i tried to change some stuff but bcant poinpoit the one to change..

ak-container ? content? im lost 🙂