Trying to add a preloaded animation and mouse effect on WordPress [closed]

I was looking to add a preloader animation and mouse effect like the site: http://plantweb.wpengine.com/duplicated-eat-food-4966/

Can you see the animation: https://prnt.sc/vvlrii and mouse effect: https://prnt.sc/vvlrx6 on the site?

Can anyone help me to add this kind of animation in WordPress?

Thank you!