ul {
list-style-type: none;
}
.topnav {
  background-color: #ffffff;
  overflow: hidden;
/* Style the links inside the navigation bar */
.topnav a {
  float: center;
  color: black;
  text-align: center;
  padding: 14px 16px;
  text-decoration: none;
  font-size: 17px;
}
/* Add a color to the active/current link */
.topnav a.active {
  background-color: #04AA6D;
  color: white;
}