body {
  margin: 0;
  font-family: Arial, Helvetica, sans-serif;
}

.topnav {
  overflow: hidden;
  background-color:;
}

.topnav a {
  float: left;
  display: block;
  color: #ccc;
  text-align: center;
  margin: 0px 20px 0px 0px;
  text-decoration: none;
  font-size: 14px;
}

.topnav a:hover {
  
  color:blue;
}

.topnav a.active {
  color:blue;
  
}

.topnav .icon {
  display: none;
}

@media screen and (max-width: 600px) {
  .topnav a:not(:first-child) {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;
  }
}