improve scaling of pictures in side-by-side arrangements
In intermediate page widths (e.g. some 610px), pictures can squeeze the text to rediculously narrow widths or just oversize/exceed page width. This behaviour should be improved.
E.g.
- https://hifis.net/media/ (after !464 (merged))
- https://hifis.net/hifisfor/rse
- https://hifis.net/hifisfor/itsupport
- https://hifis.net/media
- several blog posts with side-by-side pictures
On the other hand, I manual-tuned few pages before, this should be aligned then:
Edited by Uwe Jandt (DESY, HIFIS)