Images showing as dead boxes

It will certainly be better because you will be using HTML5
while these Word versions are very old codes e.g.

There is also our website builder in the client area, so try it out (currently there are some difficulties, so check it out in a few days)

Or try WordPress

The article is intended to briefly help users to start something, not to teach them in the smallest details.
There are simply so many things to pay attention to and listing everything in the article makes no sense,
for such things it is better to use tutorials from the net.