nav ul   
   {   
   padding: 0;   
   margin: 0;   
   list-style: none;   
   }   

   nav li   
   {   
   float: left;   
   }  

  nav a   
   {   
   float: left;   
   color: #eee;   
   margin: 0 5px;   
   padding: 3px;   
   text-decoration: none;   
   border: 1px solid #831608;   
   font: bold 14px Arial, Helvetica;   
   background-color: #831608;   
   background-image: -moz-linear-gradient(#bb413b, #831608);   
   background-image: -webkit-gradient(linear, left top, left bottom, from(#bb413b), to(#831608));   
   background-image: -webkit-linear-gradient(#bb413b, #831608);   
   background-image: -o-linear-gradient(#bb413b, #831608);   
   background-image: -ms-linear-gradient(#bb413b, #831608);   
   background-image: linear-gradient(#bb413b, #831608);   
   -moz-border-radius: 5px;   
   -webkit-border-radius: 5px;   
   border-radius: 5px;   
   text-shadow: 0 -1px 0 rgba(0,0,0,.8);   
   -moz-box-shadow: 0 1px 0 rgba(255, 255, 255, 0.3), 0 3px 0 rgba(0, 0, 0, 0.7), 0 2px 2px rgba(0, 0, 0, 0.5), 0 1px 0 rgba(255, 255, 255, 0.5) inset;   
   -webkit-box-shadow: 0 1px 0 rgba(255, 255, 255, 0.3), 0 3px 0 rgba(0, 0, 0, 0.7), 0 2px 2px rgba(0, 0, 0, 0.5), 0 1px 0 rgba(255, 255, 255, 0.5) inset;   
   box-shadow: 0 1px 0 rgba(255, 255, 255, 0.3), 0 3px 0 rgba(0, 0, 0, 0.7), 0 2px 2px rgba(0, 0, 0, 0.5), 0 1px 0 rgba(255, 255, 255, 0.5) inset;   
   }   

   nav a:hover   
   {   
   background-color: #bb413b;   
   background-image: -moz-linear-gradient(#831608, #bb413b);   
   background-image: -webkit-gradient(linear, left top, left bottom, from(#831608), to(#bb413b));   
   background-image: -webkit-linear-gradient(#831608, #bb413b);   
   background-image: -o-linear-gradient(#831608, #bb413b);   
   background-image: -ms-linear-gradient(#831608, #bb413b);   
   background-image: linear-gradient(#831608, #bb413b);   
   }   

   nav a:active   
   {   
   background: #bb413b;   
   position: relative;   
   top: 2px;   
   -moz-box-shadow: 0 0 3px rgba(0, 0, 0, 0.7) inset;   
   -webkit-box-shadow: 0 0 3px rgba(0, 0, 0, 0.7) inset;   
   box-shadow: 0 0 3px rgba(0, 0, 0, 0.7) inset;   
   }  

  nav span   
   {   
   border: 1px dashed #eba1a3;   
   display: inline-block;   
   padding: 4px 15px;   
   cursor: pointer;   
   background-color: #bb413b;   
   background-image: -moz-linear-gradient(#d4463c, #aa2618);   
   background-image: -webkit-gradient(linear, left top, left bottom, from(#d4463c), to(#aa2618));   
   background-image: -webkit-linear-gradient(#d4463c, #aa2618);   
   background-image: -o-linear-gradient(#d4463c, #aa2618);   
   background-image: -ms-linear-gradient(#d4463c, #aa2618);   
   background-image: linear-gradient(#d4463c, #aa2618);   
   }   

   nav a:hover span   
   {   
   background-color: #bb413b;   
   background-image: -moz-linear-gradient(#aa2618, #d4463c);   
   background-image: -webkit-gradient(linear, left top, left bottom, from(#aa2618), to(#d4463c));   
   background-image: -webkit-linear-gradient(#aa2618, #d4463c);   
   background-image: -o-linear-gradient(#aa2618, #d4463c);   
   background-image: -ms-linear-gradient(#aa2618, #d4463c);   
   background-image: linear-gradient(#aa2618, #d4463c);   
   }

<nav>   
   <ul>   
   <li><a href="#"><span>Home</span></a></li>   
   <li><a href="#"><span>Categories</span></a></li>   
   <li><a href="#"><span>About</span></a></li>   
   <li><a href="#"><span>Portfolio</span></a></li>   
   <li><a href="#"><span>Contact</span></a></li>   
   </ul>   
   </nav>