First thank you for this theme! It has everything I need.
I wanted to increase the size of the header image on mobile. Even when I increase the size of the header image itself, it doesn’t change how small the header appears on mobile.
I also wanted to see if there was CSS to increase the height of the featured images. Preferably I’d like for them to keep their proportionate sizing. I ran Regenerate Thumbnails and it oddly changed some of the featured images, but not all of them.
I hope you are well today and thank you for your questions.
I wanted to increase the size of the header image on mobile. Even when I increase the size of the header image itself, it doesn’t change how small the header appears on mobile.
You have too much white spacing in your header image so please remove it so that the size of image will increase on mobile.
I also wanted to see if there was CSS to increase the height of the featured images. Preferably I’d like for them to keep their proportionate sizing. I ran Regenerate Thumbnails and it oddly changed some of the featured images, but not all of them.
You can change the featured image size by using the custom plugin solution posted in the following topic.