And another aspect why this is related to ikiwiki, not just authoring a CSS, is that the style of the numbers (genereated by CSS probably) should match the style of the numbers in ikiwiki's [[plugins/toc]]. --Ivan Z.
<https://codepen.io/X-Raym/pen/dBprG> - a known CSS technique. works well. adapted here due to that numbering starting from h2, where ikiwiki (incorrectly) starts headings from h1 <http://libre-riscv.org/local.css> --lkcl
And another aspect why this is related to ikiwiki, not just authoring a CSS, is that the style of the numbers (genereated by CSS probably) should match the style of the numbers in ikiwiki's [[plugins/toc]]. --Ivan Z.
<https://codepen.io/X-Raym/pen/dBprG> - a known CSS technique. works well. adapted here due to that numbering starting from h2, where ikiwiki (incorrectly) starts headings from h1 <http://libre-riscv.org/local.css> --lkcl