But, I have no such added css in my stylesheet (simple css or additonal css). And it is also not elementor block where I could have set height as 100 vh but through elements.
I know you are right but I cant find a away to remove that css or reset 100 vh somewhere.
I can’t see where its coming from as its in a cached file.
GO to Appearance > Elements and edit the Header Element – can you see the Full Screen checkbox ?
If you can and its checked then uncheck it.
If you cannot – go to the site header tab and enable Merge with content temporarily now return to see if the Full Screen is checked