#wapp-calculator {
    margin-top: 20px;
    padding: 20px;
    border: 1px solid #ddd;
    border-radius: 6px;
}

#wapp-calculator h3 {
    margin-top: 0;
}

.wapp-row {
    margin-bottom: 15px;
}

.wapp-row label {
    display: block;
    margin-bottom: 5px;
    font-weight: 600;
}

.wapp-row input {
    width: 100%;
    max-width: 250px;
}

.wapp-results {
    margin-top: 15px;
}

.wapp-results p {
    margin: 8px 0;
}