.card{display:none}.big-text{font-size:20px}body{font-family:Arial,sans-serif;background-color:#f0f8ff;color:#333;margin:0;padding:0;display:flex;justify-content:center;align-items:center;height:100vh}.container{width:90%;max-width:600px;background-color:#fff;padding:20px;border-radius:10px;box-shadow:0 0 10px rgba(0,0,0,.1)}h1{text-align:center;color:#4CAF50}.card{margin-bottom:20px;padding:15px;border-radius:8px;background-color:#f9f9f9;box-shadow:0 0 5px rgba(0,0,0,.1)}@media (max-width:800px){.container,.card{background-color:transparent;box-shadow:none}}button{display:block;width:100%;padding:10px;margin-top:10px;background-color:#4CAF50;color:#fff;border:0;border-radius:5px;cursor:pointer;font-size:18px}button:hover{background-color:#45a049}#behavior-list{margin-top:10px}#behavior-list label{display:block;margin:5px 0}