wagtail/client/scss/layouts/_workflow-edit.scss

.workflow-pages-listing {
  max-width: 1024px - 50px;

  .field label {
    @include visuallyhidden;
  }

  input,
  select,
  textarea {
    font-size: 1em;
  }

  select + span:after {
    // stylelint-disable-next-line declaration-no-important
    font-size: 2.5em !important;
  }

  .admin_page_chooser .field-content {
    width: 100%; // so that 'choose another page' button displays in its entirety
  }
}

.top-padding {
  padding-top: $object-title-height + 12px;
}