CSS animation has also been put forth as a feature of CSS3, the ongoing draft specification managed by the World Wide Web Consortium (W3C).

Despite the controversy from those who prefer animation via Javascript, the hover tag is now widely used across the Cascading Style Sheets community.

In addition to hover, Scalable Vector Graphics supports the @keyframes at-rule, allowing a limited set of transformations to be animated.

[4] CSS animation is also available as a module in the nightly builds of WebKit as well as Google Chrome, Safari 4 and 5 and Safari for iOS (iPhone, iPod Touch, iPad), Android versions 2.x and 3.x, Internet Explorer 10+ and Microsoft Edge browser, the BlackBerry OS 6 web browser, with the -webkit- prefix.

With this problem, several individuals and websites have developed and created open source CSS button animations with code[12] for users to copy.