Max-height and max-width work better if you set them to control how big something can grow, while using height and width to determine how they should normally appear when less than that size.

How to Stretch an Image Horizontally With CSS. One way to breathe new digital life into an image is to alter its width. You could do that using an image editor, but CSS can often get the job done ...

Enter "width: ;" and "height: ;" between the curly brackets. Type number values in pixels after each attribute to specify how large you want the boxes to be.