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.

How to Make an Image Footer Stay Down in CSS. Footers are a great place to add extra content to a website without letting it get in the way of the rest of the page. Social networking badges ...

Google says images styled with CSS won’t be indexed in Image Search, advising developers to use HTML tags for important visuals.