80 characters won't fit sometimes one line in the html output

instead of using 1em, if you use 0.99em as the font-size, that change will make the lines fit in.
for example, in the Erlang page.

> % followed by a pattern (in parentheses), and the body consists of a sequence of

will have the last word "of" in a new line.

Start with the HTML/CSS generation path for the Erlang page and inspect the quoted line at the current 1em font size. Compare the suggested 0.99em adjustment in the rendered output, then check other generated pages for regressions. Done means the final word stays on the same line without harming the surrounding layout.

索引モデルが issue の本文から書いたものです。