element()The element() CSS function creates a live-updating image from an HTML element that can be used as an image or background image.limitedhttps://drafts.csswg.org/css-images-4/#element-notationcss-element-functionhttps://developer.mozilla.org/docs/Web/CSS/Reference/Values/elementcss.properties.background-image.elementcss.types.image.elementhttps://nowyoucanuse.com/features--element.html