[css-d] Boxes Out of Bounds

Hello gang, I am seeking some quick direction as to how to prevent images from jumping outside div boxes. I have a div with a border and in Firefox the images are not contained within. Any help is greatly appreciated.

[css-d] Boxes Out of Bounds

Would like some direction in getting elements like images to stay inside a div box? Currently the image inside this div is jumping outside the box in Firefox. I am using: .index { border: 1px #99 solid; width: 500px; height: 250px; padding: 5px; margin: 5px; font-family: Trebuchet