title: Easing effect on scroll
body: <p>I have been learning css and javascript these few days and came across a scrolling effect it this website(<a href="https://jnby.jp/" rel="nofollow noreferrer">https://jnby.jp/</a>).
  I am not even sure how this effect is called so I have no success on googling it.</p>
  
  <p>Could I ask how is this achieved? Or how is this called?</p>
  
  <p>Thank you</p>