#tax-calculator {
    background: #f9f9f9;
    padding: 20px;
    border-radius: 12px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.1);
    max-width: 400px;
}
#tax-calculator label {
    font-weight: bold;
    margin-top: 10px;
    display: block;
}
#tax-calculator input {
    width: 100%;
    padding: 8px;
    margin: 5px 0 15px 0;
    border-radius: 6px;
    border: 1px solid #ddd;
}
#tax-calculator button {
    background: #2a8bff;
    color: white;
    border: none;
    padding: 10px 15px;
    border-radius: 6px;
    cursor: pointer;
}
#tax-calculator button:hover {
    background: #1a6edb;
}