#ideal-weight-calculator {
    max-width: 400px;
    margin: 0 auto;
    padding: 20px;
    border: 1px solid #ccc;
    border-radius: 5px;
    background-color: #f9f9f9;
}

#ideal-weight-calculator h2 {
    text-align: center;
}

#ideal-weight-calculator form {
    display: flex;
    flex-direction: column;
}

#ideal-weight-calculator form label {
    margin-bottom: 5px;
}

#ideal-weight-calculator form input,
#ideal-weight-calculator form select {
    margin-bottom: 15px;
    padding: 8px;
    font-size: 16px;
}

#ideal-weight-calculator form button {
    padding: 10px;
    background-color: #0073aa;
    color: #fff;
    border: none;
    border-radius: 5px;
    cursor: pointer;
}

#ideal-weight-calculator form button:hover {
    background-color: #005a87;
}

#result {
    margin-top: 20px;
    font-size: 18px;
    text-align: center;
}