@jupyterlab/ui-components/style/toolkit.css

JupyterLab - UI components written in React

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

.jp-ThemedContainer {
  /* Decrease default density for Jupyter toolkit components */
  --density: -4;
}

/* Styles for tree view */
.jp-TreeView {
  min-width: auto;
}

.jp-TreeView.jp-mod-flat > .jp-TreeItem::part(content-region) {
  margin-inline-start: calc(var(--design-unit) * 2px);
}

/* Styles for tree item */
.jp-TreeItem::part(expand-collapse-button) {
  color: var(--jp-inverse-layout-color3);
}

/* Tune hover for stealth buttons otherwise they won't stand out */
.jp-TreeItem jp-button[appearance='stealth']:hover {
  background: var(--tree-item-expand-collapse-hover);
}

.jp-TreeItem[selected] jp-button[appearance='stealth']:hover {
  background: var(--tree-item-expand-collapse-selected-hover);
}