I was asked by a member to add a header image to the Author Pro theme by StudioPress which is why i wrote this post. ( Copy of support email below )
Rather than try and work out which CSS they modified, i simply started with a fresh download of the child theme and did the work locally.
The header image is added using the customizer meaning the PHP code for the custom_header function in the functions.php file also needs to be modified.
Basically all values in the PHP and CSS need to match the image.
The image in this example is 375px width by 60px height.
There’s 2 steps involved.
Here’s the instructions for modifying the code: