jupyterlab/examples/notebook/index.css

/*-----------------------------------------------------------------------------
| Copyright (c) 2014-2016, Jupyter Development Team.
|
| Distributed under the terms of the Modified BSD License.
|----------------------------------------------------------------------------*/
body {
  margin: 0;
  padding: 0;
}


#main {
  position: absolute;
  top: 4px;
  left: 4px;
  right: 4px;
  bottom: 4px;
}

.jp-Notebook-panel {
  border-bottom: 1px solid #E0E0E0;
}