{
  margin: 0;
  padding: 0;
}

h2, p {
  margin: 10px;
}

ul {
  list-style-type: none;
  margin: 0;
  padding: 0;
  overflow: hidden;
  background-color: #33333380;
}

ul li {
  float: left;
  
}

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

ul li a:hover:not(.active) {
  background-color: #11111180;
}

ul li a.active {
  background-color: #81b62f;
  }