title: how to show grid lines with CSS?
body: <p>I'm using getskeleton.com for a responsive website and I'm trying to show the grid lines in the background something like this <a href="http://nimb.ws/fTE2AR" rel="noreferrer">http://nimb.ws/fTE2AR</a> or <a href="http://fearonhay.com/residential/courtyard-house" rel="noreferrer">http://fearonhay.com/residential/courtyard-house</a> . What would be the best way to accomplish that?  </p>