.container{max-width:550px;margin:0 auto;padding:20px;text-align:center}input{width:100%;padding:12px;margin:8px 0;border-radius:8px;border:1px solid #ccc}.passenger-card{background:#fff;padding:14px;margin-top:12px;border-radius:10px;box-shadow:0 2px 4px #0000001a;text-align:left}.actions{margin-top:10px;display:flex;gap:10px}.edit{background-color:#3498db;color:#fff;padding:8px 12px;border-radius:8px;border:none}.delete{background-color:#e74c3c;color:#fff;padding:8px 12px;border-radius:8px;border:none}.btn{width:100%;padding:15px;margin-top:12px;border-radius:10px;font-size:17px;cursor:pointer}.btn-add{background-color:#7551e9;color:#fff}.btn-csv{background-color:#2ecc71;color:#fff}.btn-clear{background-color:#e74c3c;color:#fff}body{margin:0;font-family:Arial,Helvetica,sans-serif;background-color:#f2f2f7}