Animated Frames with CSS and JavaScript
"For frame based animation, we will stack our animation frames vertically, and some sizes related to height should be defined in pixels, that's not condsidered good in terms of accessibility indeed as Internet Explorer users cannot change the sizes of fonts defined in pixels, but we need it for the simplicity of the tutorial. Stacking frames horizontally and setting the vertical positions to 50% would be "awesome", but Opera has a bug I'll explain later.
However, it is still possible to compensate for different sizes of text in animation with few
