#wvc-calculator {
    font-family: Arial, sans-serif;
    margin: 20px;
    padding: 20px;
    border: 1px solid #ddd;
    border-radius: 5px;
    background-color: #f9f9f9;
}

#wvc-calculator label {
    display: block;
    margin: 5px 0;
}

#wvc-calculator input,
#wvc-calculator select,
#wvc-calculator button {
    width: 100%;
    padding: 8px;
    margin: 5px 0;
    border: 1px solid #ccc;
    border-radius: 4px;
}

#wvc-calculator button {
    background-color: #4CAF50;
    color: white;
    cursor: pointer;
}

#wvc-calculator button:hover {
    background-color: #45a049;
}

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