SVG animations without CSS nor JS; a silly or maybe crazy idea which came to my mind for some reasons.
I am still learning this technology, so you may see (for sure you will see) some mistakes in these samples.
Also these SVGs which you see them here, have been created using: badge-for-git.
The big one is try these samples on a modern web-browser which not only supports SVG but also SMIL. And
IE browser does not support it (= SMIL) for more see this page: the fall and rise of SVG
Simple:
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115s
Complex: