unity/resources/sass/admin/elements/_accordions.scss

// Accordions

.accordion-wrapper {
  @include border-radius($border-radius);
  border: $gray-200 solid 1px;

  & > .card {
    box-shadow: 0 0 0 0 transparent;

    & > .card-header {
      padding: 1rem;
      height: auto;

      .btn:active,
      .btn:focus,
      .btn:hover {
        text-decoration: none;
      }

      .form-heading {
        p {
          margin: 0;
        }
      }
    }

    .collapse {
      border-bottom: transparent solid 1px;

      &.show {
        border-bottom-color: $gray-200;
      }
    }
  }
}