A Very Simple CSS Background Zoom

A really easy method of creating a CSS background image zoom. Not only is this simple, it comes with wide browser support.
The Example

See the Pen A very simple CSS background zoom by Tipue () on CodePen.

The HTML
There's two divs.
HTML
The CSS
There's an outer div that sets the height and/or width of the background. There has to be a set value for either height or width. The overflow value hides anything outside the bounds of the outer div, which is how it works.
CSS
The inner div hover has a transform value that zooms in by 20%.
Browser support
Browsers that support transform include IE10+, Edge 12+, Chrome 36+, Firefox 16+, Safari 9+ and Opera 56+.
Further reading
See our follow-up article, A Simple CSS Background Image Zoom and Rotate.