title: HTML/CSS transparency through multiple layers
body: <p>Is it possible to create an element, that creates a transparency through x-number of layers 'behind' it?</p>
  
  <p>Example: I have layers with z-indexes 1,2,3,4, whereas 1 is red. I then create a '5th' layer, that I want to cut through the colors of layers 2,3,4 and see the red color through. Is that possible?</p>