title: Compass susy columns with no gutters?
body: <p>I have a grid that works perfectly, except that I want the columns in the nav to butt up against each other.  This is a 24-column magic grid on desktop, and each of these nav items are 4/24.  If I try negative margins, they no longer span the whole width of the nav bar, they slide over to the left and leave a hole (last item is an omega).  Can this be done with columns, or do I just need to do my navbar without?  Here in this screenshot I have colored them all gray to make it obvious:</p>
  
  <p><img src="https://i.stack.imgur.com/sH6CU.png" alt="enter image description here"></p>