Making header appear at a certain point on site

I want to make my header hidden at the start of site loading but when users scroll to a certain point I would like it to appear. Does any one have any idea how i can do that

You can do it if you don’t use a real header but a container (strip/box) instead.
But how to do it depends on how exactly you want it to behave (and on whether or not you’re using EditorX).
Your question doesn’t include enough info.

Thanks for your reply, I’m actually using wix editor but i can switch to Editorx if it provides a solution. I just want it to be invisible on page load and maybe show up after user scrolls to 300px to the bottom

@hussein-shafik desktop/mobile? fixed to screen/top of the doc?