These two repositories create for easy to use most popular CSS animation.
This repositories include next animations:
/* ====== slide down =======*/
/* ====== slide up =======*/
/* ====== slide left =======*/
/* ====== slide right =======*/
/* ====== stretch left =======*/
/* ====== stretch right =======*/
/* ====== pull up(stretch up) =======*/
/* ====== pull down(stretch down) =======*/
Just copy all code, which you need (all code, with standard class name), or change class name if need to do it.