Type design may be intimidating to many, with terms such as leading, baseline, kerning, ascender, tail, and many more … The good news is, there are eight basic, universal typographical design elements: typeface, hierarchy, contrast, consistency, alignment, white space, and color. Even a basic understanding of each of these elements can revolutionize any design project.
Typography
Typography Elements Everyone Needs to Understand — Gravit Designer Blog
W3Schools' statistics may not be relevant to your web site. Different sites attract different audiences. Some web sites attract developers using professional hardware, while other sites attract hobbyists using older computers. Anyway, data collected from W3Schools' log-files over many years clearly shows the long term trends.
