ul.accordion {
  list-style: none;
  padding: 0;
}

.accordion-button:not(.collapsed) {
  background-color: #dbad6a;
  color: #fff;
  font-weight: 700;
}

.accordion-button:focus {
  box-shadow: 0 0 0 0.25rem #dbad6a80;
}

.accordion-button:not(.collapsed)::after {
  filter: brightness(0) invert(1);
}