title: Transparent PNG as Background Image
body: <p>I have an element with a transparent png as its background image - it's like a polaroid with the photo bit cut out so just the frame is showing.</p>
  
  <p>With this as the background I then want a standard image to sit behind the element that has the transparent png background - to fit inside the frame.</p>
  
  <p>i've tried setting z-indexing and opacity and although I can get the image to show through its obviously transparent because of the opacity settings.</p>
  
  <p>Any ideas? </p>