#atsc-calculator {
    margin: 20px 0;
    padding: 15px;
    background-color: #f9f9f9;
    border-radius: 5px;
}

#atsc-calculator input, #atsc-calculator select, #atsc-calculator button {
    width: 100%;
    margin: 10px 0;
    padding: 10px;
}

#atsc-result {
    margin-top: 20px;
    padding: 10px;
    background-color: #e2e2e2;
    color: #333;
    font-weight: bold;
    text-align: center;
}