[CentOS] Upping my game on web work

Until now, I have been satisfied with hand coding my html for simple, 
but effective web pages (see http://www.htt-consult.com/).

But I want to offer one of our small synagogues some web pages and need 
a few tools for them to use to compose their pages and upload content.

What 'simple' web support tools do we have here?

Of course I will be doing this on armhfp,,,