The rendering differences were at least as much IE’s fault as Netscapes. It took several versions before IE was (mostly) standards compliant.
> I'm jealous of your memory capabilities,
Thanks. Learning web development back then left some deep scars and lasting lessons. I can no longer imagine all the other stuff I haven't retained because I remember stupid browser quirks from nearly three decades ago.
Getting many designs working consistently between IE and Netscape was impossible. The 640px wide left-aligned table layout was popular for years because it was the easiest common denominator that looked acceptable in both browsers.
When back to this time the web was mostly a pain, especially for developers, there was also some magic.
Take for example VRML, particularly VRML 2.0. I don't remember the software name, but there was a chat system within a virtual world, perhaps running in a browser (1).
1. https://csdl-images.ieeecomputer.org/mags/cg/1999/02/figures...
At the end, there was something like acceptable variation in page view for different browsers.