feat: add notion style

Signed-off-by: Matej Focko <me@mfocko.xyz>

README.md

@@ -3,4 +3,5 @@
 ## List of available styles
 
 * [mikrotik](./mikrotik.user.css)
+* [notion](./notion.user.css)
 * [sourcehut](./sourcehut.user.css)

notion.user.css

@@ -0,0 +1,50 @@
+/* ==UserStyle==
+@name           notion.so
+@namespace      git.mfocko.xyz/mfocko/dotfiles
+@updateURL      https://git.mfocko.xyz/mfocko/usercss/raw/branch/main/notion.user.css
+@version        1.1.6
+@description    Allow switching of the fonts on notion.so.
+@author         mfocko <me@mfocko.xyz>
+@preprocessor   stylus
+@var select monospace-font "Font" [
+    "custom*",
+    "Berkeley Mono Variable",
+    "Cascadia Code NF",
+    "Comic Code Ligatures",
+    "Fira Code",
+    "Hack",
+    "IBM Plex Mono",
+    "Iosevka Term",
+    "Iosevka Term Slab",
+    "Iosevka Comfy",
+    "Pragmasevka",
+    "JetBrains Mono",
+    "JuliaMono",
+    "MonoLisa Variable",
+    "PragmataPro Liga",
+    "PragmataPro Mono Liga",
+    "Rec Mono Linear",
+    "Roboto Mono",
+    "SF Mono",
+    "Source Code Pro",
+    "Victor Mono",
+]
+@var text custom-font "Custom font" "monospace"
+==/UserStyle== */
+
+if monospace-font=="custom"
+    monospace-font=custom-font
+
+@-moz-document domain("notion.so") {
+    * [style *=" monospace"] {
+        font-family: monospace-font !important;
+    }
+
+    * [style *=" serif"] {
+        font-family: "Roboto Slab" !important;
+    }
+
+    * [style *=" sans"] {
+        font-family: "Roboto" !important;
+    }
+}