@jupyterlab/apputils/style/inputdialog.css

/*
 * Copyright (c) Jupyter Development Team.
 * Distributed under the terms of the Modified BSD License.
 */

.jp-Input-Boolean-Dialog {
  flex-direction: row-reverse;
  align-items: end;
  width: 100%;
}

.jp-Input-Boolean-Dialog > label {
  flex: 1 1 auto;
}

.jp-InputDialog-inputWrapper {
  display: flex;
  align-items: baseline;
}

.jp-InputDialog-inputWrapper > input.jp-mod-styled:invalid {
  border-color: var(--jp-error-color0);
  background: var(--jp-error-color3);
}

.jp-InputDialog-inputWrapper
  > input[required].jp-mod-styled:invalid:placeholder-shown {
  /* Do not show invalid style when placeholder is shown */
  border-color: unset;
  background: unset;
}