This value tells browsers to make the image repeat across the page and down the page to produce a grid effect. Delete that statement if you don't want your GIF to create a tiled background.

Ryan Boudreaux includes all the code snippets you'll need in this demo of how to create an image hover-preview effect using HTML, CSS, and JavaScript.

Greetings I have some TIFF files that I need to save as more usable, smaller, JPEGS, however, they have images of carpets with uneven edges and then these JPEGS need to be loaded onto a website ...