how to draw circle border line with css3 rotate with animation.

[WaamTech.com]

I have try to lot of time for create the circle border line through css and want to animation but still not success so anyboday can give the suggestion.
for reference site link is http://www.subaru.com/csr/environment.html#!/2016/01/19
I want to same like this circle with animation please help.

Thanks

[Shikkediel]

Maybe you could show us your efforts so far.

[Author]

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