jupyterlab/packages/tooltip/style/base.css

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

.jp-Tooltip {
  background: var(--jp-layout-color1);
  border: var(--jp-border-width) solid var(--jp-border-color1);
  font-size: var(--jp-ui-font-size0);
  box-shadow: var(--jp-elevation-z6);
  max-width: 650px;
  z-index: 10001;
  padding: 4px;
  display: flex;
}

.jp-Tooltip-content {
  overflow: auto;
}

.jp-Tooltip:focus {
  outline: 0;
}

.jp-Tooltip pre {
  white-space: pre-wrap;
  margin: 0;
}