Martin Su

Also how to change the blue section to another colour? Cheers

Hi,
No core was actioned, customisation was mainly the front end appearance (CSS) only
Cheers

Hi,
It is:
https://www.mandkdigital.co.uk
Cheers

Hi,

I have used the above code and it did make the navigation bar transparent etc. which is great, thank you! ??

Moreover, ultimately what I require is for the featured image to go behind the navigation bar also so kind of create the following effect:

https://outlook.live.com/owa/

Many thanks again!

Hi, no editing has been made to the theme itself and how would installing a fresh copy help solve the issue? Cheers

Hi, I have tested with the default twenty twenty wordpress theme and the error message mentioned above does not appear