body{font-family:Arial,sans-serif;background-color:#f4f7f9;margin:0;padding:20px}main{background:#ffffff;padding:20px;border-radius:8px;box-shadow:0 2px 8px #0000001a}form,button{margin-bottom:20px}label{font-weight:700}input[type=text],input[type=email]{padding:8px;margin:5px 0;border-radius:4px;border:1px solid #ccc}button{background-color:#4caf50;color:#fff;padding:10px 15px;border:none;border-radius:4px;cursor:pointer}button:hover{background-color:#45a049}#registerMessage,#profileMessage{color:#333;font-style:italic}#allUsersMessage{display:flex;flex-wrap:wrap;gap:15px;margin-top:20px}.user-card{background-color:#e3f2fd;border-radius:8px;padding:10px;width:250px;box-shadow:0 2px 5px #0000001a;margin:10px 0}.user-card h3{margin:0;font-size:1.3em}.user-card p{margin:8px 0}