I'm not a fan of constant
I'm not a fan of constant animation, but yours is not awful.
What is awful is the tiny font-size. A 12px font-size is roughly equivalent to 9pt which is too small for newsprint, much less low rez monitors. Goose it up to 14px as your minimum size. There is nothing wrong with setting your size to the visitor's default. You do want folks to read all that copy, don't you?
Thanks for the nice sharing,i have never know about it.