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