body {
background: url(last.jpg) repeat-y center center fixed; 
  -webkit-background-size: cover;
  -moz-background-size: cover;
  -o-background-size: cover;
  background-size: cover;
  img {
  max-width: 100%; 
  height: auto;
}
#menu ul li ul {
display:none;
}


#menu ul li {
float:left;
list-style:none;
width:160px;
height:40px;
background:#008080;
text-align:center;
padding-top:12px;
border-right:2px solid white;
}


#menu ul li:hover {
background: #466A7F;
text-align:center;
}


#menu ul ul {
margin-top:10px;
}

#menu ul li ul li {
margin-left:-40px;
}



#menu ul li:hover > ul {display:block;}
#menu ul li ul li {background: #466A7F;}
#menu ul li ul li:hover {background: #466A7F;}