Website not displaying in IE 9

[AUythoven]

My website suddenly stopped displaying in IE 9 (it works in mozilla and chrome).  I get a blank screen displaying only the background.  A clue might be that 'live view' gives me a blank.  It worked prior to changes I made, but I did not keep a backup.  Another clue might be that when I show the page properties and click on any of the Categories, I get a message "auto is not one of the standard values for this CSS property".  Incidentally. I have two other websites that don't have these problems.  Please help!

[bregent]

1) you are posting to the wrong forum. This forum is for application development.

2) you did not provide a url or any code making it very difficult to guess what the problem could be.