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>