nyafleron I don't want the blue background color to show up, I want the night sky to fill up the full screen as it does on the desktop view. See attachments.
In relation to this query, You can try add this to custom.css file :
@media screen and (min-device-width: 320px) and (max-device-width: 480px) {#zg-background{background: url(/images/background/astronumerology/starry-night-background.jpg) repeat-y !important;}
However, As Paul has also pointed some notable observations out of which even I could observe the compile error with template settings due to which custom.css isnt updating quickly as per normal course and requiring several refreshes on site
As he suggested, Do take backup of your site so as to avoid any sort of uncertainty in future course