body {
  font-family: Arial, sans-serif;
  background-color: #f4f4f4;
  padding: 20px;
}

nav {
  background-color: #333;
  overflow: hidden;
}

nav a, .dropbtn {
  float: left;
  display: block;
  color: white;
  text-align: center;
  padding: 14px 16px;
  text-decoration: none;
}

nav a:hover, .dropdown:hover .dropbtn {
  background-color: #111;
}

.dropdown {
  float: left;
  overflow: hidden;
}

.dropdown-content {
  display: none;
  position: absolute;
  background-color: #444;
  min-width: 160px;
  z-index: 1;
}

.dropdown-content a {
  color: white;
  padding: 12px 16px;
  text-decoration: none;
  display: block;
}

.dropdown-content a:hover {
  background-color: #666;
}

.dropdown:hover .dropdown-content {
  display: block;
}