@jupyterlab/debugger/style/sidebar.css

JupyterLab - Debugger Extension

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

.jp-SidePanel-header > h2 {
  /* Set font-size to override default h2 sizing but keeping default --jp-ui-font-size0 */
  font-size: 100%;
  font-weight: 600;
  margin: 0 auto 0 0;
  padding: 4px 10px;
}

.jp-DebuggerSidebar-body
  .jp-AccordionPanel-title
  jp-toolbar::part(positioning-region) {
  flex-wrap: nowrap;
}