jupyterlab/packages/apputils-extension/style/redirect.css

/*-----------------------------------------------------------------------------
| Copyright (c) 2014-2017, Jupyter Development Team.
|
| Distributed under the terms of the Modified BSD License.
|----------------------------------------------------------------------------*/

.jp-RedirectForm input {
  display: block;
  margin-top: 10px;
  width: 100%;
}

.jp-RedirectForm-warning {
  color: var(--jp-warn-color0);
}