Facts display problem

I have problem on my website it seems that first two facts can’t be accesses from the index page. Links are not working and you can’t even select the text. Everything bellow two top columns is working nicely. Thank You!

It seems that this div is not click able but only in first two top facts:

.fact {position:relative;width:319px;margin:0px;padding:0px;border:0px;padding-top:1px;}

Fixed. By adding this code into the css:

z-index: 999;