title: Setting 0 margin in header using LaTeX's fancyhdr
body: <p>I'm trying to define a custom layout for my report for which I'm using fancyhdr. On the pages which contains a chapter start I want my header to contain a colorbox spanning across the whole page (0 cm margins) although keeping my defaults margin in the text area. I can get the box to span across the "margin notes" area, but not the other side. Here's some of my code:</p>
  
  <pre><code>\fancypagestyle{plain}{ % pages containing chapter start
      \fancyhead{}
      \fancyhead[RO]{\colorbox{NavyBlue}{\textcolor{White}{\raisebox{0cm}[1cm][0.5cm]{\makebox[3cm][c]{\textbf{\CNoV\thechapter}}}}}
  }
  </code></pre>
  
  <p>Any ideas on how to do it?</p>
  
  <p><strong>UPDATE</strong></p>
  
  <p><a href="http://docs.google.com/File?id=dg4jt6qx_10nnpxfqdj_b" rel="nofollow noreferrer">alt text http://docs.google.com/File?id=dg4jt6qx_10nnpxfqdj_b</a></p>
  
  <p>As you can see I want my header to span across the whole page (on pages containing chapter start). The text should have the normal margins..</p>