This plugin for Wordpress adds a background-size controller to the Background Image section in the Wordpress Customizer.
You can access the new controller by going to
Appearance > Customize from the Dashboard, and clicking on the
Background Image section.
Once you've added your custom background image, you can set your background-image size to:
- "Cover": As large as possible; fills entire view, with cropping.
- "Contain": As large as possible, without cropping; fits inside of view.
- "100% width": Width fits view perfectly, height may be smaller or larger than view (equivalent to css '100% auto').
- "100% height": Height fits view perfectly, width may be smaller or larger than view (equivalent to css 'auto 100%').
- "Inherit": Sets background size to whatever parent element is set to (html, in this case).
- "Custom": Allows you to put in your own css to be applied in the section called "CSS for background-size (if 'custom' selected)."
To learn more about the CSS background-size property, go to:
https://developer.mozilla.org/en-US/docs/Web/CSS/background-size
or
http://www.w3schools.com/cssref/css3_pr_background-size.asp