Animation can also be completely done in CSS. In many cases, you will probably run into some interesting demos online and would like to incorporate the CSS-only code for animation. If the animation is not as critical to the user experience, you could just use to add additional effects to the app. CSS animation is great because you don't have to write JavaScript code to manage the animation and just leave the browser to process it.
In this section, you will build an app to show some floating squares in the background of your login page, as follows:
