Added base content styling & definition list

package.json

@@ -12,6 +12,10 @@
   "dependencies": {
     "@fontsource/iosevka": "^5.2.5",
     "@fontsource/iosevka-aile": "^5.2.5",
+    "@keystar/ui": "^0.7.19",
+    "@keystatic/core": "^0.5.48",
+    "@keystatic/next": "^5.0.4",
+    "@markdoc/markdoc": "^0.5.4",
     "next": "15.5.2",
     "react": "19.1.0",
     "react-dom": "19.1.0"
@@ -27,10 +31,14 @@
     "eslint-config-next": "15.5.2",
     "eslint-plugin-mdx": "^3.6.2",
     "postcss": "^8.5.6",
+    "postcss-apply": "^0.12.0",
+    "postcss-easings": "^4.0.0",
     "postcss-import": "^16.1.1",
+    "postcss-mixins": "^12.1.2",
     "postcss-nesting": "^13.0.2",
     "postcss-preset-env": "^10.3.1",
     "postcss-utilities": "^0.8.4",
+    "postcss-vertical-rhythm": "^1.1.5",
     "prettier": "^3.6.2",
     "prettier-plugin-organize-imports": "^4.2.0",
     "stylelint": "^16.23.1",