.gst-calculator-container {
    max-width: 400px;
    margin: 0 auto;
    padding: 20px;
    border: 1px solid #ccc;
    border-radius: 10px;
    background-color: #f9f9f9;
    text-align: center;
}

.gst-calculator-container h2 {
    margin-bottom: 20px;
    font-size: 24px;
    color: #333;
}

.gst-calculator-container label {
    display: block;
    margin-bottom: 10px;
    font-weight: bold;
}

.gst-calculator-container input[type="number"],
.gst-calculator-container select {
    width: 100%;
    padding: 10px;
    margin-bottom: 20px;
    border: 1px solid #ccc;
    border-radius: 5px;
    font-size: 16px;
}

.gst-calculator-container button {
    padding: 10px 20px;
    background-color: #0073aa;
    color: #fff;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    font-size: 16px;
}

.gst-calculator-container button:hover {
    background-color: #005177;
}

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