Custom header for posts
I've a problem with the header into posts.
Such as I've already done with pages: https://www.lenergia.eu/certificato-energia-verde/ or with portfolios: https://www.lenergia.eu/posizioni-aperte/lenergia-tour/ https://www.lenergia.eu/posizioni-aperte/area-manager/
I've to made the logo white into the posts, also. As you can see here, the logo losts an element because is yellow as the background image: https://www.lenergia.eu/la-certificazione-di-acquisto-di-energia-da-fonti-rinnovabili-3/
Have you any idea about that?
Many thank's for your support.