how to put a border on my left page header....?

When i put a border on my left header it shows up on my right header…
First i select left header…
1.png
i place a border…
2.png
it shows up on the right page header…
3.png
And i cant put a border on my left page border, what i am doing wrong?

Hi

My suggestion would be to use Right & Left page styles. The following styles are set to alternate from one to the other.

See LeftHeader.odt

Regards