open-vault/ui/app/styles/components/form-section.scss

.form-section {
  padding: 1.75rem 0;
  box-shadow: 0 -1px 0 0 rgba($black, 0.1);

  > p.has-padding-bottom {
    padding-bottom: 1.5rem;
  }
}

.field:first-child .form-section {
  padding: 0;
  box-shadow: none;
}