@media screen and (max-width: 600px) {
    .topnav a {display: none;}
    .topnav a.icon {
      float: left;
      display: block;
      padding: 0;
    }
    .topnav .icon:hover {
        background-color: #fafafa;
        color: #027375;
    }
}

@media screen and (max-width: 600px) {
    .topnav.responsive {position: relative;}
    .topnav.responsive .icon {
    display: block;
    padding: 0;
    }
    .topnav.responsive a {
      float: none;
      display: block;
      text-align: left;
    }
}