.navbar-light .navbar-nav .active > .nav-link, .navbar-light .navbar-nav .nav-link.active, .navbar-light .navbar-nav .nav-link.show, .navbar-light .navbar-nav .show > .nav-link {
  color: #007bff;
  color: var(--primary) !important;
  border-bottom: 2px solid #007bff;
  border-bottom: 2px solid var(--primary);
}

.nav-link {
  margin-right: 1rem;
}

.img-formula {
  max-width: 100%;
  margin: 3rem auto;
  text-align: center;
  display: block;
}

h1 {
  padding-top: 3rem;
  padding-bottom: 1rem;
}

.close:hover, .close:focus {
  background-color: transparent;
  opacity: 0.8;
}

@media print {
  .container {
    width: 100% !important;
  }
}