How to use a background image in the app header
Hi, I'd like to use an image instead of text as the header in my app's screens.
I have created a class called headerbg on the mobileheader element for a screen.
I have uploaded my image to the assets.
I have created the following custom css class:
.headerbg { 
  background-image: url(header.jpg);  
  background-repeat: no-repeat; 
  background-attachment: fixed; 
  background-position: 0px 0px;
}
Is there a place inside the app where I can store my global custom css code, or do I have to link to an external css file via in the External Resources section?
What is the url path I would use to reference my background-image that has been uploaded to my assets?