All the HTML that worked back then still works, so I’m not sure what you’re asking? Table layouting works just as it used to. HTML 4.01 Transitional doctype works. `<body text="" bgcolor="">` works. And so on. You just write HTML. By hand. As disturbing as it may sound in 2024.
This specimen is particularly pure, not having any sort of a stylesheet (after all, we had CSS 2.0 already in 1998), the only <link> tag pointing to the RSS feed (which we didn’t have until 1999)!