How can we develop this kind of tutorials sharing website

[Java_Coder]

So here is the screenshot exactly what I want.
So this same UI is used by codesikho.com as well.
so I want to know is there any template for this?
What I observed they i storing the videos on Vimeo streaming platform and use their href attributes.

But how everyone have the same ui for sharing the tutorial. just that thing i want to know.

[Slayerk]

Gitbook or Docsify. Sample:

docsify

Introduce