body {
  margin: 0;
}

.topnav {
  overflow: hidden;
  float: right;
}

.topnav a {
  float: left;
  display: block;
}

.topnav .icon {
  display: none;
}

@media screen and (max-width: 600px) {
  .topnav a.w3-bar-item {display: none;}
  .topnav a.icon {
    float: right;
    display: block;
  }
}

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