Animation programs how are they made

Question

the programs on sololearn that have received hundreds of like how are they made.why don't they run when I paste them on my code playground .

Answer 1

You mean html and CSS animation by frozen TEC?

Answer 2

If yes, than they use way back technology, use jQuery you can create animation much better than simple use of CSS3 and html5

Answer 3

yeah it is Frozen tec Thanks to reply.I got it.