These are elements that are applied with CSS in order to circumvent the need to bloat your HTML with additional elements. This allows you to set and create custom animations that begin and end at ...

Keyframe-Animation-Project Students will create a single web page project that animates one or more graphics using one or more keyframe animations and a variety of transitions and animation techniques ...

Internet Explorer and Opera do not support CSS keyframe animations as of September 2011. Visitors to your page will still see the buttons without the animation applied.