Hi Carlos,
Sorry for the confusion, yeah I tested this on my local dev and its kind of tricky to do it with one navigation inline element only, So let’s do it this way, duplicate your Inline Navigation element, using the Hide During Breakpoints feature, hide the duplicate navigation inline on Extra Large, Large, and Medium screen, do the opposite on the original navigation inline, hide it on Small and extra small screen. This way the two navigation elements will not show at the same time.
Then inspect the duplicate Inline Navigation and set its Flexbox’ Child Placement to Column.
This should make the menu stack instead of inline. Then adjust the other flexbox option appropriately (e.g. align horizontal, align vertical, etc.).
These two Inline Navigation element approach gives you more flexibility on how you configure your footer menu for desktop and mobile view (e.g. adjusting the font-size appropriately).
Hope it helps,
Cheers!