.nav {position: fixed; top: 0; left: 0px; width: 100%;}

.nav + .content {
  padding-top: 60px;
}

.nav ul { 
*zoom:1;
  height: 40px;
 list-style:none;
  margin:0;
   padding:0; 
   background:#333; 
   }
   
    .nav ul:before,.nav ul:after {
     content:"";
      display:table; 
     } 
     
     .nav ul:after {
      clear:both; 
     } 
     
     .nav ul > li { 
display: inline-block;
margin-right: -4px;
     position:relative;
      } 
      
      .nav a { 
      display:block; 
      padding:10px 11px; 
      line-height:1.2em; 
      color:#fff; 
      border-left:1px solid #595959;
      text-decoration: none;
      } 
      
      .nav a:hover { 
      text-decoration:none; 
      background:green; 
      } 
      
      .nav li ul { 
      background:#273754;
      position:absolute;
       left:-9999em;
       top:36px; z-index:1;
       text-align: left;
       } 
       
       .nav ul > li:hover ul {
        left:0; 
        }
       
      .nav li ul li { 
      width:200px; 
	  background:#273754;
      border-bottom: 1px solid #333333; 
      } 
      
      .nav li ul a { 
      border:none;
       }
       
        .nav li ul a:hover { 
       background:green;
        }