message: fix(aio): style TOC scrollbar similar to other scrollbars
diff: @@ -12,16 +12,16 @@ body::-webkit-scrollbar-thumb, md-sidenav.sidenav::-webkit-scrollbar-thumb, .mat
  outline: 1px solid $darkgray;
  }
  -.search-results::-webkit-scrollbar {
  +.search-results::-webkit-scrollbar, .toc-container::-webkit-scrollbar {
  height: 4px;
  width: 4px;
  }
  -.search-results::-webkit-scrollbar-track {
  +.search-results::-webkit-scrollbar-track, .toc-container::-webkit-scrollbar-trac {
  -webkit-box-shadow: inset 0 0 6px rgba(0,0,0,0.3);
  }
  -.search-results::-webkit-scrollbar-thumb {
  +.search-results::-webkit-scrollbar-thumb, .toc-container::-webkit-scrollbar-thumb {
  background-color: $mediumgray;
  outline: 1px solid slategrey;
  }
  