webpack-bootstrap-ui-kit/src/scss/elements/accordion.scss

.site__elements__accordion {
  > .element-container > .accordion {
  }
}

.accordion {
    &-body {
        .element {
            &:first-child {
                padding-top: 0;
            }
            &:last-child {
                padding-bottom: 0;
            }
        }
    }
}