www.wysiwygwebbuilder.com

I would like to know if there is a way to add this effect to the menu without needing external codes, or an extension?

https://codepen.io/tutsplus/pen/WNerWWp

You can do this with scroll transitions.
https://www.wysiwygwebbuilder.com/scrol ... tions.html

or by using the 'onscrollhide' event
https://www.wysiwygwebbuilder.com/bookmark_events.html

I refer to the menu header

Correct. My answer was also related to the header.
There are several templates that use this functionality.