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.

Use CSS to position the div however you want with your image. For instance, if you wanted the image to appear to the left of your div, you might use the following CSS: ...

Cascading Style Sheets (CSS) level 3, also known as CSS3, introduces multiple background images support. You can list multiple background images, separating each with a comma, and set how they ...