Now use clearer not clear fix What is default.css? there are more than 1000 lines on it. The query didn't work, that's why I didn't create the slideshow. Sometimes text-indent didn't work in Firefox, not sure what happen, so I reduce the font to zero. Also what is gn-iweb.css? some class is available in default.css and gn-iweb.css, that's really make me confuse.