body {
    font-family: Arial, sans-serif;
    background-color: #f4f4f4;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    margin: 0;
}

.converter {
    background-color: #fff;
    padding: 20px;
    border-radius: 8px;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
    text-align: center;
}

select,
input,
button {
    margin: 10px 0;
    padding: 10px;
    width: 100%;
    border-radius: 5px;
    border: 1px solid #ccc;
}

#result {
    margin-top: 20px;
    font-size: 18px;
    color: #333;
}