Answer 1

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Links found online:

https://www.google.co.in/url?sa=t&source=web&rct=j&url=https://www.w3schools.com/howto/howto_js_animate.asp&ved=2ahUKEwj-hr3a3OXaAhUBO48KHWaaCckQFjABegQIBRAB&usg=AOvVaw2X8rc_Q6BOipxsOf4rnv3a
https://www.google.co.in/url?sa=t&source=web&rct=j&url=https://www.tutorialspoint.com/javascript/javascript_animation.htm&ved=2ahUKEwj-hr3a3OXaAhUBO48KHWaaCckQFjACegQIBhAB&usg=AOvVaw1jPX0GW50oRL33VvQVxl6y
https://www.google.co.in/url?sa=t&source=web&rct=j&url=https://javascript.info/animation&ved=2ahUKEwj-hr3a3OXaAhUBO48KHWaaCckQFjAEegQIARAB&usg=AOvVaw0xPKr7DiZ0hr167xxkn9W_