title: CSS: Full width on specific
body: <p>Hi I have a container which has a width of 1150px. Now I have this other mainmenu, with width: 100% that I want to place inside the container. But then ofcourse it only get 100%(1150px) but I want it full width from side to side, so it should ignore the setted width only for .mainmenu</p>
  
  <p>I tried position: absolute which made it all wrong and weird</p>
  
  <pre><code>#mainmenu
  {
      height: 37px;
      width: 100%;
      margin: 0px auto;
      background-image: url(../images/mainmenu_bg5.jpg);
  
  }
  </code></pre>