blue-twilight/public/themes/base/css/app.css

.album-slideshow-container #image-preview {
    height: 600px;
    max-width: 100%;
    width: 800px;
}

.album-slideshow-container .thumbnails {
    overflow-x: scroll;
    overflow-y: hidden;
    white-space: nowrap;
    width: auto;
}

.no-margin-bottom {
    margin-bottom: 0;
}

.no-padding {
    padding: 0;
}