nav {
  background-color: #f1f1f1;
  overflow: hidden;
}

nav ul {
  margin: 0;
  padding: 0;
  list-style: none;
}

nav > ul > li {
  float: left;
}

nav > ul > li > a {
  display: block;
  color: #333;
  text-align: center;
  padding: 14px 16px;
  text-decoration: none;
}

nav > ul > li > a:hover {
  background-color: #ddd;
}

nav > ul > li > ul {
  display: none;
  position: absolute;
  z-index: 1;
}

nav > ul > li > ul > li {
  float: none;
}

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

nav > ul > li > ul > li > a {
  background-color: #f1f1f1;
  color: #333;
  text-decoration: none;
  display: block;
  padding: 12px 16px;
}

nav > ul > li > ul > li > a:hover {
  background-color: #ddd;
}

/* Estilize o ícone de engrenagem do Font Awesome */
nav > ul > li > a > i {
  margin-right: 5px;
}