nib column() missing max-width constraint for fluid containers

nib column() missing max-width constraint for fluid containers

The goal is to guarantee that a fluid grid defined with nib’s column() mixin does not overflow its parent container. In practice, the mixin currently omits a max-width declaration, which leads to layout breakage when used with fluid units.

Key constraints: compatibility across Stylus releases 0.61–0.63, the behaviour of the --compress flag (which drops max-width), and the interaction with the rupture grid plugin that relies on nib. The documentation does not specify a default max-width fallback, leaving developers uncertain about the intended behaviour.

Unresolved questions:

• Does nib provide a default max-width for column() that is currently undocumented?
• How does the --compress compilation flag affect the presence of max-width in the generated CSS?
• Which Stylus version introduced a reliable max-width fallback, and what migration steps are required for older projects?