title: Don't resize the height in a background image
body: <p>I'm trying my hands on responsive design in CSS but is stuck on one problem.</p>
  
  <p>I have a background image in my CSS that is resizing when I'm changing the browser size. The problem is that I only want it to resize in width and not height. Is this possible?</p>
  
  <p>So what I would like to achieve is that when I resize the window the height of the background picture should be static but the width would be resized.
  The classic "stretch-to-fit" would be perfect for me.</p>