The content banner is an option to be considered in a content page like an article page or a discussion page, for example. The content banner appears below the title bar and helps with the brand of your product/service.
The size of the content banner is smaller than the regular one. It starts with 120px height and goes until 168px.
In the New Theming UI there's a toggle that can be turn on to select the content banner option.
Article's page with a content banner
Content Banner
Content Banner with logo
If you prefer you can upload your logo separately, this way you have a better control in your responsive image.
