Column macro adds a couple of pixels of indentation of its content compared to surrounding boxes / paragraphs

[lucaa]

How to reproduce:

• add a column macro in a page, with or without a section
• add more content around this macro, such as other content or pagragraph
• save and view

Expected results:

• on the left, all content is aligned (starts on the same vertical), and aligned with the page title

Actual result:

• on the left, all items of the content are aligned except for the column macro content that seems to be a little indented to the right. There is no box or anything to justify this misalignment.

[lucaa]

Actually, the logic I would expect here is that columns issued from the confluence section / columns macro are drawn / decorated using the bootstrap grid / columns rules, to be coherent with any other columns made in XWiki.

While I understand that the columns macro of confluence has a fixed with while the bootstrap columns are responsive and adapt to the screen, we should at least respect the spacing / margins. Also, from a code maintenance point of view, this set of macros (layout, section, column) should not come with a reimplementation of layouting, they should reuse the layouting of XWiki as much as possible.