.c-acc__item {
  border-bottom: 1px solid #ddd;
}

.c-acc__summary {
  width: 100%;
  padding: 1rem 0;
  background: none;
  border: none;
  text-align: left;
  font-size: 1.15rem;
  font-weight: 600;
  cursor: pointer;
}

.c-acc__content {
  max-height: 0;
  opacity: 0;
  overflow: hidden;
  transition: max-height 0.35s ease, opacity 0.25s ease;
}

.c-acc__item.is-open .c-acc__content {
  max-height: 600px;
  opacity: 1;
}