Vertical Menu in CSS

Hi @GLaHeRa

OCS 2.x is semi-compatible with OJS 2.x themes, but not e.g. OJS 3.x themes. So I recommend you study OJS2 thems and how it is possible achieve what you want.

In forum we have some examples of customization in OJS2, that you may read and attempt to apply in OCS2.
See here:

Hope it helps

Israel Cefrin
Public Knowledge Project Team