body {
  font-family: 'Petrona';font-size: 22px;
}



#footer {
  font-size:small;
}



ul{
  margin: 0;
  padding: 0;
  overflow: hidden;
  background-color: #333;
}


li{
  float: left;
}


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

li a:hover {
background-color: #111;
}


.active {
  background-color: #4CAF50;
}