#da-calculator {
    margin: 20px 0;
}

#da-domain {
    padding: 10px;
    width: 200px;
    margin-right: 10px;
}

#da-submit {
    padding: 10px 20px;
    background-color: #0073aa;
    color: white;
    border: none;
    cursor: pointer;
}

#da-submit:hover {
    background-color: #005177;
}

#da-result {
    margin-top: 20px;
}

.error {
    color: red;
}

.success {
    color: green;
}