/* Add a black background color to the top navigation */
.topnav {
  background-color: #F7F7F7;
  overflow: hidden;
}

/* Style the links inside the navigation bar */
.topnav a {
  float: left;
  color: #F7F7F7;
  text-align: center;
  padding: 6px 16px;
  text-decoration: none;
  font-size: 12px;
  font-family: verdana;
  box-shadow: 0 4px 8px 0 rgba(0, 0, 0, 0.2), 0 6px 20px 0 rgba(0, 0, 0, 0.19);
}

/* Change the color of links on hover */
.topnav a:hover {
  background-color: #ddd;
  color: blue;
}

/* Add a color to the active/current link */
.topnav a.active {
  background-color: #F7F7F7;
  color: black;
}