/*
ul {
  list-style-type: none;
  margin: 0;
  padding: 0;
  width: 25%;
    background-color: #f1f1f1;
  position: fixed;
  height: 100%;
    overflow: auto; 
}

li a {
  display: block;
  color: #000;
  padding: 8px 16px;
  text-decoration: none;
}
*/
/*
li a.active {
  background-color: #04aa6d;
  color: white;
}

li a:hover:not(.active) {
  background-color: #555;
  color: white;
}
*/