qmk_firmware/docs/sidebar.css

.sidebar-toggle {
  position: absolute;
  top: 0;
  bottom: auto;
  left: 0;
}

.search {
  margin-top: 40px;
}

.markdown-section h3 {
  margin-top: 16px;
}

.sidebar, .sidebar-nav {
  line-height: 1.5em !important;
}