Challenge : make a loader

Question

You can use CSS3 or HTML5 canvas for it.
Let the challenge begin

Answer 1

https://code.sololearn.com/WYNfoPGqRpBb/?ref=app

Answer 2

https://code.sololearn.com/WVwz089L33ez/?ref=app

Answer 3

https://code.sololearn.com/WO3VtbVCnqSV/?ref=app

Answer 4

here's my attempt
https://code.sololearn.com/WI7IEEO8sKOi/?ref=app

Answer 5

https://code.sololearn.com/WfjMoz9dgv3n/?ref=app