diff --git a/src/components/base/Header.astro b/src/components/base/Header.astro
index bf31fc0..88f880d 100644
--- a/src/components/base/Header.astro
+++ b/src/components/base/Header.astro
@@ -1,6 +1,5 @@
 ---
 interface MenuItem {
-  identifier: string;
   name: string;
   url: string;
 }
@@ -8,42 +7,34 @@ interface MenuItem {
 /** Config for the menu displayed in site navbar. */
 const menu: MenuItem[] = [
   {
-    identifier: 'posts',
     name: 'Posts',
     url: '/posts/',
   },
   {
-    identifier: 'repos',
     name: 'Repos',
     url: '/repos/',
   },
   {
-    identifier: 'slides',
     name: 'Slides',
     url: '/slides/',
   },
   {
-    identifier: 'aoc',
-    name: 'AoC',
-    url: '/aoc/',
+    name: 'Wiki',
+    url: '/wiki/',
   },
   {
-    identifier: 'songs',
     name: 'Songs',
     url: '/songs/',
   },
   {
-    identifier: 'map',
     name: 'Map',
     url: '/map/',
   },
   {
-    identifier: 'about',
     name: 'About',
     url: '/about/',
   },
   {
-    identifier: 'search',
     name: 'Search',
     url: '/search/'
   }
diff --git a/src/components/tree/Tree.astro b/src/components/tree/Tree.astro
index 5c4d57e..6bde128 100644
--- a/src/components/tree/Tree.astro
+++ b/src/components/tree/Tree.astro
@@ -5,19 +5,20 @@ import type { Maybe } from "purify-ts";
 
 
 interface Props {
+  heading: string;
   tree: Tree;
   slug: string;
   prefix: Maybe<string>;
 }
 
-const { tree, slug, prefix } = Astro.props;
+const { heading, tree, slug, prefix } = Astro.props;
 ---
 
 <aside class="link-tree">
   <h2 class="link-tree__heading">
     {prefix.map(pathify).mapOrDefault(href =>
-      <a class="link-tree__heading-text" href={href}>Personal wiki</a>,
-      <span class="link-tree__heading-text">Personal Wiki</span>
+      <a class="link-tree__heading-text" href={href}>{heading}</a>,
+      <span class="link-tree__heading-text">{heading}</span>
     )}
   </h2>
   <nav class="link-tree__nav">
diff --git a/src/content/config.ts b/src/content/config.ts
index f096069..6a5a655 100644
--- a/src/content/config.ts
+++ b/src/content/config.ts
@@ -9,16 +9,6 @@ export const collections = {
       tags: z.array(z.string()).optional(),
     })
   }),
-  aoc: defineCollection({
-    schema: z.object({
-      title: z.string(),
-      date: z.date(),
-      day: z.number(),
-      stars: z.number(),
-      math: z.boolean().optional(),
-      tags: z.array(z.string()).optional(),
-    })
-  }),
   slides: defineCollection({
     schema: z.object({
       title: z.string(),
diff --git a/src/content/posts/quotes.md b/src/content/wiki/quotes.md
similarity index 96%
rename from src/content/posts/quotes.md
rename to src/content/wiki/quotes.md
index 54e3cb0..fb19cd4 100644
--- a/src/content/posts/quotes.md
+++ b/src/content/wiki/quotes.md
@@ -1,6 +1,5 @@
 ---
 title: Quotes
-date: 2023-05-01
 ---
 
 A collection of quotes I've found pretty memorable.
diff --git a/src/content/posts/recommended-reading.md b/src/content/wiki/recommended-reading.md
similarity index 95%
rename from src/content/posts/recommended-reading.md
rename to src/content/wiki/recommended-reading.md
index e1ed51b..f17a67e 100644
--- a/src/content/posts/recommended-reading.md
+++ b/src/content/wiki/recommended-reading.md
@@ -1,6 +1,5 @@
 ---
-title: Recommended reading
-date: 2023-06-01T20:02:20.239Z
+title: Recommended Reading
 ---
 
 ## Programming
diff --git a/src/content/wiki/typescript/index.md b/src/content/wiki/typescript/index.md
deleted file mode 100644
index 1485dd6..0000000
--- a/src/content/wiki/typescript/index.md
+++ /dev/null
@@ -1,5 +0,0 @@
----
-title: "TypeScript"
-slug: "typescript"
----
-Hello
diff --git a/src/content/wiki/typescript/type-challenges.md b/src/content/wiki/typescript/type-challenges.md
index e1e58b1..432c17e 100644
--- a/src/content/wiki/typescript/type-challenges.md
+++ b/src/content/wiki/typescript/type-challenges.md
@@ -4,7 +4,7 @@ title: "Type Challenges"
 
 ## 4・Pick
 
-> Implement the built-in `Pick<T, K>` generic without using it. Constructs a type by picking the set of properties `K` from `T`.
+Implement the built-in `Pick<T, K>` generic without using it. Constructs a type by picking the set of properties `K` from `T`.
 
 ```ts
 type MyPick<T, K extends keyof T> = {
@@ -15,7 +15,7 @@ type MyPick<T, K extends keyof T> = {
 
 ## 7・Readonly
 
-> Implement the built-in `Readonly<T>` generic without using it. Constructs a type with all properties of T set to readonly, meaning the properties of the constructed type cannot be reassigned.
+Implement the built-in `Readonly<T>` generic without using it. Constructs a type with all properties of T set to readonly, meaning the properties of the constructed type cannot be reassigned.
 
 ```ts
 type MyReadonly<T> = {
@@ -26,7 +26,7 @@ type MyReadonly<T> = {
 
 ## 11・Tuple to Object
 
-> Given an array, transform it into an object type and the key/value must be in the provided array.
+Given an array, transform it into an object type and the key/value must be in the provided array.
 
 ```ts
 type TupleToObject<T extends readonly (string | number)[]> = {
diff --git a/src/pages/aoc/[...slug].astro b/src/pages/aoc/[...slug].astro
deleted file mode 100644
index e15f486..0000000
--- a/src/pages/aoc/[...slug].astro
+++ /dev/null
@@ -1,15 +0,0 @@
----
-import Article from '../../layouts/Article.astro';
-import { getCollection } from 'astro:content';
-
-export async function getStaticPaths() {
-  return (await getCollection('aoc'))
-    .map(entry => ({params: {slug: entry.slug}, props: {entry}}));
-}
-
-const { entry } = Astro.props;
-const { Content, headings } = await entry.render();
----
-<Article frontmatter={entry.data} headings={headings}>
-  <Content />
-</Article>
diff --git a/src/pages/aoc/[year].astro b/src/pages/aoc/[year].astro
deleted file mode 100644
index 046e220..0000000
--- a/src/pages/aoc/[year].astro
+++ /dev/null
@@ -1,24 +0,0 @@
----
-import List from '../../layouts/List.astro';
-import { getCollection } from 'astro:content';
-import dayjs from 'dayjs';
-
-
-export async function getStaticPaths () {
-  return [...new Set((await getCollection('aoc')).map(e => e.slug.slice(0, 4)))]
-    .map(year => ({params: {year}, props: {year}}))
-}
-
-const { year } = Astro.props;
-const content = await getCollection('aoc', (entry) => entry.id.startsWith(year));
-
-const pages = content
-  .map(doc => ({
-    title: `Day ${doc.data.day}`,
-    slug: `/aoc/${doc.slug}/`,
-    date: dayjs(doc.data.date),
-  }));
-
----
-
-<List title={year} pages={pages} />
diff --git a/src/pages/aoc/index.astro b/src/pages/aoc/index.astro
deleted file mode 100644
index d910248..0000000
--- a/src/pages/aoc/index.astro
+++ /dev/null
@@ -1,21 +0,0 @@
----
-import List from '../../layouts/List.astro';
-import { getCollection } from 'astro:content';
-
-
-const content = await getCollection('aoc');
-const occ: {[key: string]: number} = {}
-
-for (const doc of content) {
-  const year = doc.slug.slice(0, 4);
-  (year in occ) ? occ[year] += 1 : occ[year] = 1;
-}
-
-const pages = Object.entries(occ)
-  .map(([year, occ]) => ({
-    title: `${year} - ${occ} days`,
-    slug: `/aoc/${year}/`,
-  }));
----
-
-<List title="Advent of Code" pages={pages} />
diff --git a/src/pages/wiki/[...slug].astro b/src/pages/wiki/[...slug].astro
index 687eb4b..addcab8 100644
--- a/src/pages/wiki/[...slug].astro
+++ b/src/pages/wiki/[...slug].astro
@@ -21,8 +21,9 @@ const { Content } = await entry.render();
 
 <Base>
   <main class="main-wiki">
-    <Tree tree={tree} slug={entry.slug} prefix={Maybe.of("/wiki/")}/>
-    <article>
+    <Tree heading="Personal Wiki" tree={tree} slug={entry.slug} prefix={Maybe.of("/wiki/")}/>
+    <article class="markdown">
+      <h1>{entry.data.title}</h1>
       <Content />
     </article>
   </main>
diff --git a/src/pages/wiki/index.astro b/src/pages/wiki/index.astro
index e876df4..cff7f87 100644
--- a/src/pages/wiki/index.astro
+++ b/src/pages/wiki/index.astro
@@ -10,7 +10,7 @@ const tree = collapse(await getCollection('wiki'));
 
 <Base>
   <main class="main-wiki">
-    <Tree tree={tree} slug="wiki" prefix={Maybe.of("wiki")} />
+    <Tree heading="Personal Wiki" tree={tree} slug="wiki" prefix={Maybe.of("wiki")} />
     <article>
       siema
     </article>
diff --git a/src/styles/components/_link-tree.scss b/src/styles/components/_link-tree.scss
index fc8cf69..a460038 100644
--- a/src/styles/components/_link-tree.scss
+++ b/src/styles/components/_link-tree.scss
@@ -1,6 +1,6 @@
 .main-wiki {
   display: grid;
-  grid-template-columns: 16em 1fr;
+  grid-template-columns: 16em 1fr 16em;
 }
 
 .link-tree {
@@ -8,7 +8,8 @@
   overflow-y: auto;
 
   &__heading {
-    border-bottom: 1px solid black;
+    border-bottom: 1px solid;
+    border-image: linear-gradient(to right, transparent, var(--c-primary), transparent) 1;
 
     &-text {
       display: block;