Recently we have been discussing the use of web animations in modern website UIs, having covered such popular choices as storytelling animations, subtle motion, typography animations, data animations and others. It is hard to argue that the Web slowly but surely is becoming more vivid, impressive and expressive place that relies on visual impact.

Developers opt in favor of dynamic solutions rather than static ones; and it not only concerns animations but also gifs, walkthroughs, cinemagraph, and videos. The SVG, JS, CSS3, HTML5 and several other progressive languages and tech niques have prepared a solid foundation for that, solving plenty of problems and providing an optimal environment for allowing your ideas to come true.

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http://www.onextrapixel.com/2015/08/13/best-web-animations-so-far-part-2-how-to-code-snippets-and-solutions/