Website scrolls on its own

#### Support plan

* *is this issue currently blocking your project?*: no
* *is this issue affecting a production system?*: no

#### Context

* OS: Windows 10 Pro (Build 19041)
* Browser: Chrome 89.0.4389.82 (64-bit)

#### What are you trying to achieve or the steps to reproduce?

I visit the hapi.dev API reference (https://hapi.dev/api/?v=20.1.0)

#### What was the result you got?
The site scrolls upward on its own.

#### What result did you expect?
The site not to scroll on its own ¯\_(ツ)_/¯. Right now, it makes me quite anxious—like I'm in a race to finish reading what I'm reading before it scrolls out of view.😅

I'm not sure exactly what conditions trigger the auto-scroll. An easy way is to Ctrl-F a term somewhere further in the docs, then scroll a bit (like in the clip below). Some other times, it happens when I nav between sections from the menu.

https://user-images.githubusercontent.com/14361073/110753460-e5d20500-8246-11eb-8940-62907d90d8bd.mp4