div.treeview{padding:5px;margin-bottom:20px;margin-top:10px}.treeview,.treeview ul{margin:0;padding:0;list-style:none}.treeview ul{margin-left:1em;position:relative}.treeview ul ul{margin-left:.5em}.treeview ul:before{content:"";display:block;width:0;position:absolute;top:0;left:0;border-left:1px solid;bottom:0}.treeview ul li ul:before{bottom:20px}.treeview li{margin:0;padding:0 1em;line-height:40px;position:relative}.treeview ul li:before{content:"";display:block;width:10px;height:0;border-top:1px solid;margin-top:-1px;position:absolute;top:20px;left:0}