Using svg file as backgound for angular app

I would like to use the svg file as a background for an angular app so that it scales along the rest when resized. If I load it with:

<span><ng-include src="'resources/svg/caricaFornoWB.svg'" /></ng-include></span>

      

        
        
        
      

    

svg is displayed above the rest of the application. How can I show this in the background (perhaps linking its objects to my own)?