Cronox26 0 Newbie Poster

Hi there I make a control for my web base program in VB.Net 2005 I use the style sheet [css] for make it see like a modal pop up. I make the css style with the IE, Fire Fox , safari specification and work great but when fire fox make the upgrade to the new version the control starts to view blurry like the background color pass thru the front of the control Div please let me know.