How to include the background-cover value in the shorthand background property?

Answer 1

Good question this is from W3C http://www.w3.org/community/webed/wiki/CSS_shorthand_reference

So if you want to include the background-size value in the shorthand syntax, you need to:

• Explicitly include background-position values even if these are the same as the defaults Write background-position values before background-size values. Put a slash in between these two pairs of values.

So you would want to do something like this

background: url(http://www.stanford.edu/dept/CTL/cgi-bin/academicskillscoaching/wp-content/uploads/2013/03/test-anxiety.gif) top left / cover no-repeat;

See fiddle here

http://jsfiddle.net/8Up6V/