function turning() {
    const image = document.getElementById('page'); image.style.rotate = ((isNaN(buffer = parseInt(image.style.rotate)) ? 0 : buffer) + 90) + 'deg'; (((isNaN(buffer) ? 0 : buffer) / 90) % 2) === 0 ? (image.style.margin = '15% 0px 20% 0px', image.style.width = '100%') : image.style.margin = null
}

