i’m working on modular skeleton template, and i’ve found this in the headers :
body_classes: “modular header-image fullwidth”
how to use that? how this is working?
i was searching inside the documentation but i haven’t found nothing, i can also collaborate to write some nice documentation (grav documentation it’s ++++++ really nice!)
It’s not in the docs because its not a grav core features… It’s merely something that is supported by the Antimatter theme. Basically if you look in the templates/partials/base.html.twig of Antimatter you will see:
<body id="top" class="{{ page.header.body_classes }}">
So basically this means that Antimatter theme, is looking for this page header and setting it on the <body> tag. This can be used by CSS to target any page.
Grav is super flexible allowing you to do things like this. This is not a specific configuration like you might see in other CMS platforms because it’s totally free-form and unstructured.
Imagine it, then make it happen 
That’s the Grav way
uahuuu, really speedy answer
thank you, i will look into that 