.topnav {
  background-color: black;
  overflow: hidden;
}
.topnav {
         font-family: Montserrat, Helvetica Neue, sans-serif;    /*here you can add your font type*/
         font-weight: 400;
         font-style: normal;
         font-size: 14px;
         letter-spacing: .1em;
         text-transform: uppercase;
         text-align: center
         
     }
/* Style the links inside the navigation bar */

.topnav li{
    display:inline;
}
.topnav a {
  float: center;
  color: #f2f2f2;
  text-align: center;
  padding: 15px 15px;
  text-decoration: none;
  font-size: 18px;
}

/* Change the color of links on hover */
.topnav a:hover {
  background-color: #ddd;
  color: #004d80;
}

/* Add a color to the active/current link */
.topnav a.active {
  background-color: #004d80;
  color: white;
}