message: style(Sidebar): adjust width to 80px
diff: @search-action-font-size: @font-size-md;
  // Sidebar
  -@sidebar-width: 85px;
  -
  -// SidebarItem
  +@sidebar-width: 80px;
  @sidebar-font-size: @font-size-md;
  @sidebar-line-height: 20px;
  @sidebar-text-color: @text-color;
  