Wow. js is a JavaScript library that generates CSS animations as you scroll along any webpage. It integrates CSS3 based animations in the websites. In the default case, you can use these animations by triggering animate.
Make an element revealable. Add the CSS class . wow to a HTML element: it will be invisible until the user scrolls to reveal it. ... Choose the animation style. Pick an animation style in Animate.css , then add the CSS class to the HTML element