The actual code in 3.3.1 is slightly different. All <BODY> tags get a class, some an ID too, all starting with body-
Add this as HTML/CSS Inserts -> CSS Insert
HTML Code:
body#body-page-XX div.header-image-container {
display: none;
}
Replace XX with the ID of the page in question.
You could style (or remove) other layout parts as well. I.e. remove the heading from "Page" pages. This time using the class "body-page" instead of the ID "body-page-XX" because we want all "Page" pages, not just a specific one
HTML Code:
body.body-page div.post-headline {
display: none;
}
However "Page" page containers get an additional class of "page" (in addition to "post") in 3.3.1 so this should work as well
HTML Code:
div.page div.post-headline {
display: none !important;
}
I've added !important here as the same container has the class "post" as well, to make sure one class ("page") can overwrite the other class ("post").