#mainNav.navbar-shrink {
    box-shadow: 0 0.5rem 1rem rgba(0, 0, 0, 0.15);
    background-color: #fff;
  }
  #mainNav.navbar-shrink .navbar-brand {
    color: #212529;
  }
  #mainNav.navbar-shrink .navbar-brand:hover {
    color: #f4623a;
  }
  #mainNav.navbar-shrink .navbar-nav .nav-item .nav-link {
    color: #212529;
  }
  #mainNav.navbar-shrink .navbar-nav .nav-item .nav-link:hover {
    color: #f4623a;
  }