CSS animations draft specification managed by the World Wide Web Consortium (W3C). As of June 2011, Firefox 5 includes CSS animations support. 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 codice_2 prefix. It is also used in iTunes 9 to support iTunes LP files. Future support: Opera v12+ will support CSS3 animations and transformations with codice_3 prefix. Early on
Google Chrome results in a "Sad Tab" screen of death, similar to the well-known "Sad Mac", but only one tab crashes instead of the whole application. This strategy exacts a fixed per-process cost up front, but results in less memory bloat over time as fragmentation is confined to each instance and no longer needs further memory allocations. This architecture was adopted in Safari and Firefox. Chrome includes a process management utility called "Task Manager" which lets users see what sites and plugins are using the most memory, downloading the most bytes and overusing the CPU and provides the ability to terminate them.