fleet/frontend/components/PlatformSelector/_styles.scss

.platform-selector {
  // override global form-field width: 100%
  width: auto;

  &__checkboxes {
    display: flex;
    align-items: center;
    gap: 12px;
  }

  .form-field__label--disabled {
    color: $ui-fleet-black-50;
  }

  &__platform-checkbox-wrapper {
    width: auto;
  }

  .form-field__help-text {
    display: flex;
    flex-direction: column;
    gap: $pad-medium;
  }
}