I have set a background on the data-role="page" element like so
<div data-role="page" style="background: transparent url('img/background.jpg') no-repeat;" >
It works perfectly fine on a desktop browser and on the iPad safari browser.
The issue I am having is that when you add the website to the home screen as an 'app' and it is a full screen web app. It doesn't show the background...
I have tried setting it via a style sheet and inline and both ways give me the same issue.
I am completely out of ideas as to why this wouldn't work.
Any ideas are greatly appreciated.
In the end this is what worked for me.
<div data-role="page" id="home" style="background: #000000
url('img/background.jpg') repeat;">
wouldn't work via a css file.