.modal-challenge{display:block;position:fixed;top:50%;left:50%;transform:translate(-50%,-50%) translateY(-100%);background-color:#fff;border:1px solid #ccc;box-shadow:0 4px 8px #0000001a;z-index:1000;width:400px;height:400px;border-radius:10px;opacity:0;transition:transform .3s ease-out,opacity .6s ease}.modal-challenge.open{transform:translate(-50%,-50%) translateY(0);opacity:1}.overlay-challenge{display:block;position:fixed;top:0;left:0;width:100%;height:100%;background-color:#0000;z-index:999}.overlay-challenge.open{background-color:#0000004d}