This site is built using the Jekyll Ruby-based static site generator and has been for the last decade or so. Prior to that, many Content Management Systems were used, including a home-spun PHP-based CMS called SWIM. It started its life in 2001 on Blogger.
I have removed any font style specifics except for post titles and sans-serif for body text. If you don’t like the font, change your browser default for sans. I do set font-size to 1.05rem and line-height to 1.5rem based on my own preferences for reading.
It is built on my personal computer, a Dell XPS laptop running PopOS.
It is written in VSCode. I typically use a theme from Catppucin or Ayu. Krita is used to manipulate images, when necessary. It is deployed via rsync from the terminal. I use Zsh and Oh My Zsh, with the Oh My Zsh git plugin getting heavy use. Source code is managed via git and GitHub. The font used in both VSCode and the terminal is Intel One Mono. It used to be Hasklig.