.panel{display:none;padding:0 18px;overflow:hidden;background-color:#f1f1f1}.accordion{background-color:#eee;color:#444;cursor:pointer;padding:18px;width:100%;text-align:left;border:0;outline:0;transition:.4s}.accordion.active,.accordion:hover{background-color:#ddd}.accordion:after{content:'\002B';color:#777;font-weight:bold;float:right;margin-left:5px}.panel.active{display:block}.panel{display:none}.accordion.active+.panel{display:block}