body {
    font-family: Arial, sans-serif;
    text-align: center;
    padding: 20px;
}

.container {
    max-width: 600px;
    margin: auto;
}

.video-preview {
    position: relative;
    margin-top: 20px;
}

#canvasPreview {
    position: absolute;
    top: 0;
    left: 0;
    display: none;
}