@adobe/spectrum-css/dist/components/fieldgroup/index-vars.css

The Spectrum CSS top-level backwards compatible package

.spectrum-FieldGroup {
  --spectrum-fieldgroup-margin: var(--spectrum-global-dimension-size-200);
}

.spectrum-FieldGroup {
  display: -ms-flexbox;
  display: flex;
  vertical-align: top;
  -ms-flex-wrap: wrap;
      flex-wrap: wrap;
}

[dir="ltr"] .spectrum-FieldGroup--horizontal .spectrum-FieldGroup-item:not(:last-child) {
    margin-right: var(--spectrum-fieldgroup-margin);
}

[dir="rtl"] .spectrum-FieldGroup--horizontal .spectrum-FieldGroup-item:not(:last-child) {
    margin-left: var(--spectrum-fieldgroup-margin);
}

.spectrum-FieldGroup--vertical {
  display: -ms-inline-flexbox;
  display: inline-flex;
  -ms-flex-direction: column;
      flex-direction: column;
}