Thread:Fredy-san/@comment-26131865-20160806220307/@comment-26131865-20160807081808

Okay, forget about it, I figure it myself. The tip is to introduce a text (any sort of text) not into this sub container that appears in the first line (so, not vertical-centered) and somewhat triggers the square thing for the main container ; it appears behind the pictures in the sub container. So I put a "invisible" space and all work again! Still the code looks buggy/badly written, but as it will have little use, that would be fine.