*{margin:0;padding:0;box-sizing:border-box}body{font-family:Arial,sans-serif;background-color:#f0f0f0;color:#333;min-height:100vh;display:flex;justify-content:center;align-items:center}.app-container{width:100%;padding:20px;display:flex;justify-content:center}.card{background-color:#fff;border:1px solid #ddd;border-radius:8px;padding:2rem;max-width:400px;width:100%;text-align:center;box-shadow:0 4px 8px #0000001a}h1{font-size:1.5rem;margin-bottom:1rem}form{display:flex;flex-direction:column;align-items:center}.number-input{width:100%;padding:10px;font-size:1rem;border:1px solid #ccc;border-radius:4px;margin-bottom:10px}.convert-button{background-color:#007bff;color:#fff;border:none;padding:10px 20px;font-size:1rem;border-radius:4px;cursor:pointer}.convert-button:hover{background-color:#0056b3}.result{margin-top:20px;text-align:left}.result h2{font-size:1.2rem;margin-bottom:8px}.result p{font-size:1rem}