What programming language can I use to incorporate this into my website?

Question

What programming language can I use to incorporate the transition between when the user clicks on the right arrow on the middle right hand corner of the screen in the example. I

Answer 1

This kind of animation and transaction could be archived using both CSS and javascript. You can find easily a lot of useful resources and tutorials on the internet but my recommendations for you is to follow the posts on https://codepen.io/, you will find there a lot of useful examples, posts and tutorials.