text: $(document).ready(function() {
    $('.btn-blue').click(function() {
      $('.nav-green').addClass('nav-blue').removeClass("nav-green nav-red nav-white")
      $('.nav-red').addClass('nav-blue').removeClass("nav-green nav-red nav-white")
      $('.nav-white').addClass('nav-blue').removeClass("nav-green nav-red nav-white")
    });
  
    $('.btn-red').click(function() {
      $('.nav-green').addClass('nav-red').removeClass("nav-green nav-blue nav-white")
      $('.nav-blue').addClass('nav-red').removeClass("nav-green nav-blue nav-white")
      $('.nav-white').addClass('nav-red').removeClass("nav-green nav-blue nav-white")
    });
  
    $('.btn-green').click(function() {
      $('.nav-blue').addClass('nav-green').removeClass("nav-red nav-blue nav-white")
      $('.nav-red').addClass('nav-green').removeClass("nav-red nav-blue nav-white")
      $('.nav-white').addClass('nav-green').removeClass("nav-red nav-blue nav-white")
    });
  
    $('.btn-white').click(function() {
      $('.nav-blue').addClass('nav-white').removeClass("nav-red nav-blue nav-green")
      $('.nav-red').addClass('nav-white').removeClass("nav-red nav-blue nav-green")
      $('.nav-green').addClass('nav-white').removeClass("nav-red nav-blue nav-green")
    });
  });