#my-popup{display:none;position:fixed;top:50%;left:50%;transform:translate(-50%,-50%);z-index:9999;background:#fff;padding:30px;box-shadow:0 10px 40px rgba(0,0,0,0.3);max-width:600px;width:90%;border-radius:10px}.popup-overlay{display:none;position:fixed;top:0;left:0;width:100%;height:100%;background:rgba(0,0,0,0.6);z-index:9998}