body {
    font-family: Arial, sans-serif;
    text-align: center;
}

.slider-container, .korting-container {
    margin: 20px;
}

.slider {
    width: 80%;
    margin: 10px;
}

#totaal {
    font-size: 20px;
    font-weight: bold;
    margin-top: 20px;
}