body {
    font-family: Arial, sans-serif;
    background-color: #f4f4f4;
}

.hidden {
    display: none;
}

#error {
    color: red;
}

#result {
    background-color: #e8f4fd;
    color: #000;
}

.help-icon {
    cursor: pointer;
    background-color: #007bff;
    color: white;
    border-radius: 50%;
    padding: 0 6px;
    margin-left: 5px;
    font-size: 12px;
}