ul {
  z-index: 1;
  list-style-type: none;
  margin: 0;
  padding: 0;
  background-color: Green;
  position: -webkit-sticky;
  position: sticky;
  top: 10px;
  display: flex;
  justify-content: center;
  align-items: center;
}

li {
  float: left;
}

li a, .dropbtn {
  display: block;
  color: white;
  text-align: center;
  padding: 14px 16px;
  text-decoration: none;
  transition: .15s;
}

li a:hover:not(.active) {
  background-color: DarkGreen;
}

.active {
  background-color: DarkGreen;
}

.dropdown {
  float: left;
  display: block;
  cursor: pointer;
  color: white;
  padding: 14px 16px;
  background-color: DarkGreen;
  margin: 0;
}

.dropdown-content {
  display: none;
  text-decoration: none;
  position: absolute;
  background-color: Green;
  min-width: 160px;
  z-index: 1;
}

.dropdown-content a {
  float: none;
  display: block;
  color: black;
  padding: 14px 16px;
  text-align: left;
}

.dropdown-content a:hover {
  background-color: DarkGreen;
}