Problem:
In Confluence we can place more than one column inside a panel or section, although if we do this they will be placed in a vertical way, one above the other.
In this was we cannot have the desired layout and also we cannot use borders in sections (as an example) if we don't use sections and panels

Suggestion:
Let we place columns inside a panel or section on the side of each other, not only on above or below.

Workaround:
Use tables