title: Why does a sticky nav change width when it 'sticks'?
body: <p>I have created a sticky nav using way points. The nav is nested inside the header which sits inside a wrapper. If the nav is set to <code>width:100%</code> ie the full width of the wrapper, its width becomes 100% of the body when the waypoint is hit and the <code>position:fixed</code>.</p>
  
  <p>Is there a way for a sticky nav to have a percentage width?</p>