/* Toggle between adding and removing the "responsive" class to topnav when the user clicks on the icon */

function myFunction() {
    var x = document.getElementById("myTopnav");
    if (x.className === "topnav" || x.className === "topnav navbar-fixed-top") {
        x.classList.add("responsive");
    } else {
        x.classList.remove("responsive");
    }
}