jupyterlab/style/callstack.css

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

.jp-DebuggerCallstack-body ul {
  list-style: none;
  margin: 0;
  padding: 0;
  background: var(--jp-layout-color1);
  color: var(--jp-ui-font-color1);
  font-size: var(--jp-ui-font-size1);
}

.jp-DebuggerCallstack-body ul li {
  padding: 5px;
  padding-left: 8px;
}

.jp-DebuggerCallstack-body ul li.selected {
  color: white;
  background: var(--jp-brand-color1);
}

.jp-DebuggerCallstack .jp-ToolbarButtonComponent-label {
  display: none;
}