nodemcu-firmware/docs/css/extra.css

blockquote {
  padding: 0 15px;
  color: #777;
  border-left: 4px solid #ddd;
}

.rst-content blockquote {
  margin: 0;
}

/*shifts the nested subnav label to the left to align it with the regular nav item labels*/
ul.subnav ul.subnav span {
  padding-left: 1.3em;
}