header.php

    <div id ="header-wrapper" class="wrapper clearfix">
        <div class="container">
          <div  id="header"  class="span-24 column clearfix">
            <div id="logo" class="span-18 column ">
             <a href="index.php">
               <img src="images/design/logo-simple.jpg" />
             </a>   
            </div><!-- end #LOGO .span-18  -->

                 <div id="main-navigation"  class="span-6 last column clearfix">
                        <ul id="navigation" class="list-horizontal clearfix">
                        <li class="home"><a href="index.php">home</a></li>
                        <li class="work"><a href="work.php">work</a></li>
                        <li class="service"><a href="service.php">service</a></li>
                        <li class="contact last"><a href="contact.php">contact</a></li>
                        </ul>
                 </div><!-- end #main-nav  .span-NUM -->
          </div><!-- end .span-24 #header -->
        </div><!-- end .container -->                                                                      
    </div><!-- end #header-wrapper -->