Not showing Section / Container in frontend without "content"

Hey guys and girls,

im new to bricks and im already confused.

When i add a new section including container to a new page, give them both some background, they wont show on the frontend without extra content like text / images etc…

The section is there, the container is there, theres a background, so shouldnt it show these sections in the frontend?

The moment i add heading the section is visible in the frontend.