.btn-close {
  --bs-btn-close-opacity: 0.75;
  --bs-btn-close-hover-opacity: 1;
}

@media (prefers-color-scheme: light) {
  .btn-close-white {
    filter: none;
  }

  .btn-close {
    filter: none !important;
  }
}

@media (prefers-color-scheme: dark) {
  .btn-close {
    filter: var(--bs-btn-close-white-filter);
  }
}