.tax-card {
    max-width: 520px;
    margin: 40px auto;
    padding: 25px;
    background: #f9fbff;
    border-radius: 14px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.08);
}

.tax-card label {
    font-weight: 600;
    margin-top: 12px;
    display: block;
}

.tax-card input,
.tax-card select {
    width: 100%;
    padding: 10px;
    margin-top: 5px;
    border-radius: 8px;
    border: 1px solid #ccc;
}

.tax-card button {
    margin-top: 20px;
    width: 100%;
    padding: 12px;
    background: #1a73e8;
    color: white;
    border: none;
    border-radius: 10px;
    font-size: 16px;
}

#result {
    margin-top: 20px;
    font-size: 15px;
}