.topnav a {
  float: left;
  display: block;
  color: #f2f2f2;
  text-align: center;
  padding: 6px 10px;
  text-decoration: none;
  font-size: 14px;
  font-weight: 800;
  color: #000;
}

.topnav a:hover {
  background-color: transparent;
  color: #999;
}

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

.topnav .icon {
  display: none;
}

@media screen and (max-width: 800px) {
  /*.topnav a:not(:first-child) {display: none;}*/
  .topnav a {display: none;}
  .topnav a.icon {
    float: right;
    display: block;
    color: #000;
  }
}

@media screen and (max-width: 800px) {
  .topnav.responsive {position: relative;}  
  .topnav.responsive .icon {
    position: absolute;
    right: 0;
    top: 0;
    color: #000;
  }
  .topnav.responsive a {
    float: none;
    display: block;
    text-align: left;
    color: #000;
  }
}