Hi Rashida,
unfortunately I need to get back to this issue. Your fix (see above) solved the problem on mobile phones, but now I seem to have an issue witht he header display in desktop view: The site logo is not displayed correctly (too high / leaking into the top bar above), and still the header height I set in the template preferences is ignored on the frontend. Also, the header content is not properly centered vertically.
I do not know where this comes from, I did not change template.css at all manually. On other pages where I use Helix Ultimate, this is not an issue at all.
Please kindly check again how to fix this issue.
Thanks,
Ben