The site I'm working on is here > http://www.activeinternational.com/MEXOP/
To recreate the problem, click on the blue box that has arrow pointing to the right. That will open a lightbox video player. At the bottom right hand corner of the player window you should see a the text "Cerrar".
It shows fine in Chrome, Firefox and Safari. However, on IE, its a no show. What gives?
Here's the css I'm using (many of the rules are just for tracing the layout in IE to confirm the anchor element is present.)
border:1px solid #fff !important;