[Half Circle rotation animation]

Thank you for your response.

I wanted to make an animation for a preloader images.
I'm not sure whether this method is good.

Here is an example in Flash.

I want to achieve this effect (attached File)

 

 

preloader2.zip

[Half Circle rotation animation]

Hi. This is my firs post.

 

I'm trying to learn animation in html5 and javascript.
So far, I worked a little bit with Flash.
But I do not understand a few things, I would ask for example, based on
 

See the Pen Guwtq by anon (@anon) on CodePen

I want to animate "item2".
So animation rotation, the path (inside) "elementu1".

I hope I wrote it correctly.

Thanks.