#side_menu details img.icon{margin-right:10px;width:24px}#side_menu details.folder .link{align-items:flex-start;display:flex}#side_menu details.folder .icon.open{display:none}#side_menu details.folder .link.selected .icon.open{display:block}#side_menu details.folder .link.selected .icon.close{display:none}