This is the amazing liquid spinner. Unfortunately, it doesn’t work in IE and Edge browsers because they don’t support SVG filters. This is a very interesting experiment that shows the real power of the SVG on the web.
See the Pen Liquid spinner (CSS + SVG animations) by Ivan Bogachev (@sfi0zy) on CodePen.
Simple UI framework. RSCSS, REM-based sizes, fluid typography and other nice ideas. This website is powered by it.