n");
      var i;

      for (i = 0; i < acc.length; i++) {
          acc[i].addEventListener("click", function() {
              /* Toggle between adding and removing the "active" class,
               to highlight the button that controls the panel */
              this.classList.toggle("active");

              /* Toggle between hiding and showing the active panel */
              var panel = this.nextElementSibling;
              if (panel.style.display === "block") {
                  panel.style.displ