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.

Add a short CSS class to an HTML Web page to use animated and stationary GIF images as the page's background. Open an HTML document and find the document's head section.

Make sure to find colours that work well together. For example, you might like yellow and red, but using both of them at once might be a bit tough for visitors to look at.