body{font-family:Arial,sans-serif;background-color:#343434;color:#fff;display:flex;align-items:center;justify-content:center;height:100vh;margin:0}.mainContainer{display:flex;gap:60px}.container{background-color:#1f1f1f;padding:20px;border-radius:8px;box-shadow:0 0 10px #00000080;text-align:center;width:40vw;height:40vh;display:flex;justify-content:center;flex-direction:column}label{display:block;margin-bottom:8px;font-size:16px}input{width:auto;padding:20px;border:1px solid #555;border-radius:4px;margin-bottom:16px;background-color:#444;color:#fff;font-size:30px}button{background-color:#4caf50;color:#fff;padding:10px;border:none;border-radius:4px;cursor:pointer;font-size:16px}button:hover{background-color:#45a049}strong{font-weight:700;font-size:24px;margin-top:16px;display:block}.result{font-size:50px}