#nav {
  float:left;
  list-style:none;
  margin-bottom:10px;
  border: 0px solid black;

}

#nav li {
  float:left;
  position:relative;
  display:block;

}

#nav li a {
  display:block;
  padding: 2px 10px;
  color:#0ff;
  text-decoration:none;
  text-align:left;

}

#nav li a:hover {
  color:#fff;
  background:#007b78;
  text-decoration:underline;

}

#nav ul {
  list-style:none;
  position:absolute;
  display: none;

}

#nav ul li {
  padding-top:1px;
  float:none;
  width: 200px;

}

#nav ul a {
  white-space:nowrap;
  display:block;

}

#nav li:hover ul {
  display: block;

}

#nav li:hover a {
  background:#007b78;
  text-decoration:underline;

}

#nav li:hover ul li a:hover {
  background:#333;

}