That you are using positioning of any sort for that header is an indication you don't know the first thing about layout, but that's to be expected with the spcae wasting stock image not scaling down and that you had the fonts scaling in the first blasted place.

Though that's to be expected since your "beautiful template" is a complete failure at accessibile font sizes and leigible colour contrasts even after you turned off the scaling.

THIS is why off the shelf templates are scams made by artists under the DELUSION you know what design is. To be so devoid of the most basic knowledge of elastic design, accessibility norsms, proper semantics, etm, etm is to basically lack any and all of the engineering knowledge that separates design from art.

And its why dicking around with trash like "canva" or glorified paint programs like Photoshop or Figma is the polar opposite of legitimate design!

And part of why I'm low on pity for the fools and tools who get suckered by such gibberish nonsense. Particularly since you're bending yourself over the table when it comes to accessibility, meaning if you go full Pakled and use any of this for business, you're opening the door to legal harassment!