.gst-calculator {
    font-family: Arial, sans-serif;
    margin: 20px;
    padding: 20px;
    background-color: #f4f4f4;
    border-radius: 8px;
    width: 100%;
    max-width: 400px;
    margin: 0 auto;
}

.gst-calculator label {
    font-weight: bold;
    display: block;
    margin-bottom: 5px;
}

.gst-calculator input, .gst-calculator select {
    width: 100%;
    padding: 8px;
    margin-bottom: 15px;
    border-radius: 4px;
    border: 1px solid #ccc;
}

#calc_gst {
    background-color: #4CAF50;
    color: white;
    padding: 10px;
    border: none;
    cursor: pointer;
    font-size: 16px;
    border-radius: 4px;
}

#gst_calculator_results {
    margin-top: 20px;
}