body {
  font-family: Arial, Helvetica, sans-serif; 
  font-size: 16px; 
  line-height: 8px;
}

nav {
  margin: 10px auto; 
  text-align: center;
}

nav ul ul {
  display: none;
  z-index: 10000;
}

nav ul li:hover > ul {
   display: block;
  }

nav ul {
  background: #efefef; 
  background: linear-gradient(top, #efefef 0%, #bbbbbb 100%);  
  background: -moz-linear-gradient(top, #efefef 0%, #bbbbbb 100%); 
  background: -webkit-linear-gradient(top, #efefef 0%,#bbbbbb 100%); 
  box-shadow: 0px 0px 9px rgba(0,0,0,0.15);
  padding: 0 12px;
  border-radius: 10px;  
  list-style: none;
  position: relative;
  display: inline-table;
}
nav ul:after {
  content: ""; clear: both; display: block;
  }

nav ul li {
   float: left;
}

nav ul li:hover {
   background: #4b545f;
   background: linear-gradient(top, #4f5964 0%, #5f6975 40%);
   background: -moz-linear-gradient(top, #4f5964 0%, #5f6975 40%);
   background: -webkit-linear-gradient(top, #4f5964 0%,#5f6975 40%);
}

nav ul li:hover a {
   color: #fff;
}

nav ul li a {
   display: block; padding: 25px 40px;
   color: #757575; text-decoration: none;
}
      
nav ul ul {
  background: #5f6975; border-radius: 0px; padding: 0;
  position: absolute; top: 100%;
  }
    nav ul ul li {
      float: none; 
      border-top: 1px solid #6b727c;
      border-bottom: 1px solid #575f6a; position: relative;
    }
      nav ul ul li a {
        padding: 15px 40px;
        color: #fff;
      } 
        nav ul ul li a:hover {
          background: #4b545f;
        }
    
  nav ul ul ul {
    position: absolute; left: 100%; top:0;
  }