Add fonts, rework CSS

static/fonts/mononoki/README.md

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+# mononoki
+
+> A font for programming and code review.
+
+For a closer look [http://madmalik.github.io/mononoki/](http://madmalik.github.io/mononoki/).
+
+## Features
+
+* Alternate stylistic set with dotted zero, configurable with `ss01`.
+
+## Installation
+
+[Download mononoki.zip](https://github.com/madmalik/mononoki/releases/download/1.6/mononoki.zip) and unpack it.
+* [macOS](http://support.apple.com/kb/HT2509), alternatively there is also a [homebrew formula](https://github.com/Homebrew/homebrew-cask/blob/main/Casks/font/font-m/font-mononoki.rb).
+* [Windows](https://support.microsoft.com/en-us/office/add-a-font-b7c5f17c-4426-4b53-967f-455339c564c1)
+* Linux/Unix - distro dependent, if you have a font manager installed on your system, open the font file and hit "Install". Alternatively, there are [mononoki-packages](https://repology.org/project/fonts:mononoki/versions) in many of the package repos, if you prefer installing via package manager.
+
+## Credit
+
+Box drawing characters created with [box drawing](https://github.com/adobe-type-tools/box-drawing).