.calculator-container {
    max-width: 600px;
    margin: auto;
    padding: 20px;
    border: 1px solid #ccc;
    border-radius: 10px;
    text-align: center;
    font-family: Arial, sans-serif;
}

input, select {
    width: 100%;
    padding: 10px;
    margin: 10px 0;
    font-size: 16px;
}

button {
    padding: 10px 20px;
    font-size: 18px;
    margin-top: 10px;
    cursor: pointer;
}

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