diff --git a/package-lock.json b/package-lock.json
index 50ae1c3..5ee259a 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -11,17 +11,19 @@
         "@codemirror/lang-css": "^6.3.1",
         "@codemirror/lang-html": "^6.4.9",
         "@codemirror/lang-javascript": "^6.2.3",
+        "@fsegurai/codemirror-theme-github-light": "^6.1.2",
         "@vueuse/core": "^12.7.0",
         "codemirror": "^6.0.1",
         "github-markdown-css": "^5.8.1",
+        "highlight.js": "^11.11.1",
         "marked": "^15.0.7",
+        "marked-highlight": "^2.2.1",
         "naive-ui": "^2.41.0",
         "normalize.css": "^8.0.1",
         "vue": "^3.5.13",
         "vue-codemirror": "^6.1.1"
       },
       "devDependencies": {
-        "@codemirror/state": "^6.5.2",
         "@iconify/vue": "^4.3.0",
         "@rsbuild/core": "^1.2.11",
         "@rsbuild/plugin-vue": "^1.0.6",
@@ -226,6 +228,18 @@
       "integrity": "sha512-kBJtf7PH6aWwZ6fka3zQ0p6SBYzx4fl1LoZXE2RrnYST9Xljm7WfKJrU4g/Xr3Beg72MLrp1AWNUmuYJTL7Cow==",
       "license": "MIT"
     },
+    "node_modules/@fsegurai/codemirror-theme-github-light": {
+      "version": "6.1.2",
+      "resolved": "https://registry.npmjs.org/@fsegurai/codemirror-theme-github-light/-/codemirror-theme-github-light-6.1.2.tgz",
+      "integrity": "sha512-B/YvJ4mx1EuY5WvN+RrFd3uHoFhXiTZRDmSVEyctb/pQonKpgkblVN+FvLt9iRfVTJkkyBavjXJzT16ClaZcDg==",
+      "license": "MIT",
+      "peerDependencies": {
+        "@codemirror/language": "^6.0.0",
+        "@codemirror/state": "^6.0.0",
+        "@codemirror/view": "^6.0.0",
+        "@lezer/highlight": "^1.0.0"
+      }
+    },
     "node_modules/@iconify/types": {
       "version": "2.0.0",
       "resolved": "https://registry.npmjs.org/@iconify/types/-/types-2.0.0.tgz",
@@ -1846,6 +1860,15 @@
         "node": ">= 18"
       }
     },
+    "node_modules/marked-highlight": {
+      "version": "2.2.1",
+      "resolved": "https://registry.npmjs.org/marked-highlight/-/marked-highlight-2.2.1.tgz",
+      "integrity": "sha512-SiCIeEiQbs9TxGwle9/OwbOejHCZsohQRaNTY2u8euEXYt2rYUFoiImUirThU3Gd/o6Q1gHGtH9qloHlbJpNIA==",
+      "license": "MIT",
+      "peerDependencies": {
+        "marked": ">=4 <16"
+      }
+    },
     "node_modules/merge-stream": {
       "version": "2.0.0",
       "resolved": "https://registry.npmjs.org/merge-stream/-/merge-stream-2.0.0.tgz",
diff --git a/package.json b/package.json
index 7bb7388..8c49e25 100644
--- a/package.json
+++ b/package.json
@@ -12,17 +12,19 @@
     "@codemirror/lang-css": "^6.3.1",
     "@codemirror/lang-html": "^6.4.9",
     "@codemirror/lang-javascript": "^6.2.3",
+    "@fsegurai/codemirror-theme-github-light": "^6.1.2",
     "@vueuse/core": "^12.7.0",
     "codemirror": "^6.0.1",
     "github-markdown-css": "^5.8.1",
+    "highlight.js": "^11.11.1",
     "marked": "^15.0.7",
+    "marked-highlight": "^2.2.1",
     "naive-ui": "^2.41.0",
     "normalize.css": "^8.0.1",
     "vue": "^3.5.13",
     "vue-codemirror": "^6.1.1"
   },
   "devDependencies": {
-    "@codemirror/state": "^6.5.2",
     "@iconify/vue": "^4.3.0",
     "@rsbuild/core": "^1.2.11",
     "@rsbuild/plugin-vue": "^1.0.6",
diff --git a/src/components/Editor.vue b/src/components/Editor.vue
index 5ca6da7..87c2175 100644
--- a/src/components/Editor.vue
+++ b/src/components/Editor.vue
@@ -1,7 +1,7 @@
 <script lang="ts" setup>
 import { EditorView } from "@codemirror/view"
 import { Codemirror } from "vue-codemirror"
-import { smoothy } from "../themes/smoothy.ts"
+import { githubLight } from "@fsegurai/codemirror-theme-github-light"
 import { css } from "@codemirror/lang-css"
 import { javascript } from "@codemirror/lang-javascript"
 import { html } from "@codemirror/lang-html"
@@ -45,7 +45,7 @@ const lang = computed(() => {
   <Codemirror
     v-model="code"
     indentWithTab
-    :extensions="[styleTheme, lang, smoothy]"
+    :extensions="[styleTheme, lang, githubLight]"
     :tabSize="4"
     :style="{ height: '100%', fontSize: props.fontSize + 'px' }"
   />
diff --git a/src/components/Editors.vue b/src/components/Editors.vue
index 4df9e50..d8035c5 100644
--- a/src/components/Editors.vue
+++ b/src/components/Editors.vue
@@ -2,7 +2,6 @@
   <n-tabs
     style="height: 100%"
     pane-class="pane"
-    size="large"
     :default-value="currentTab"
     type="segment"
     @update:value="changeTab"
@@ -41,7 +40,7 @@
           <span>选项</span>
         </n-flex>
       </template>
-      <n-flex size="large" vertical class="wrapper">
+      <n-flex vertical class="wrapper">
         <n-flex align="center">
           <span class="label">重置</span>
           <n-button @click="reset('html')">HTML</n-button>
diff --git a/src/components/Preview.vue b/src/components/Preview.vue
index 42cab0f..2d50d94 100644
--- a/src/components/Preview.vue
+++ b/src/components/Preview.vue
@@ -46,7 +46,7 @@ onMounted(preview)
 </script>
 <style scoped>
 .title {
-  height: 46px;
+  height: 40px;
   background-color: rgb(247, 247, 250);
   padding: 0 20px;
 }
diff --git a/src/components/Tutorial.vue b/src/components/Tutorial.vue
index f72dc81..e0bf1be 100644
--- a/src/components/Tutorial.vue
+++ b/src/components/Tutorial.vue
@@ -12,22 +12,27 @@
         </n-button>
       </n-flex>
     </n-flex>
-    <div class="markdown-body" v-html="marked(content)"></div>
+    <div class="markdown-body" v-html="markdownContent"></div>
   </div>
 </template>
 <script lang="ts" setup>
 import { Icon } from "@iconify/vue"
 import { step, prev, next, content } from "../store"
-import { onMounted, ref, watch } from "vue"
+import { onMounted, ref, shallowRef, watch } from "vue"
 import { marked } from "marked"
+import { markedHighlight } from "marked-highlight"
+import hljs from "highlight.js"
 
 const end = ref(false)
+const markdownContent = shallowRef("")
 
 async function getContent() {
   const res = await fetch(`/turtorial/${step.value}/README.md`)
   const data = await res.text()
   if (!!data) {
     content.value = data
+    const html = await marked.parse(content.value, { async: true })
+    markdownContent.value = html
     end.value = false
   } else {
     end.value = true
@@ -35,7 +40,22 @@ async function getContent() {
   }
 }
 
-onMounted(getContent)
+onMounted(() => {
+  getContent()
+  marked.use({
+    gfm: true,
+    async: true,
+  })
+  marked.use(
+    markedHighlight({
+      langPrefix: "hljs language-",
+      highlight(code, lang) {
+        const language = hljs.getLanguage(lang) ? lang : "plaintext"
+        return hljs.highlight(code, { language }).value
+      },
+    }),
+  )
+})
 watch(step, getContent)
 </script>
 <style scoped>
@@ -45,7 +65,7 @@ watch(step, getContent)
   height: 100%;
 }
 .title {
-  height: 46px;
+  height: 40px;
   background-color: rgb(247, 247, 250);
   padding: 0 20px;
   flex-shrink: 0;
diff --git a/src/main.ts b/src/main.ts
index 2014abe..f712e23 100644
--- a/src/main.ts
+++ b/src/main.ts
@@ -2,6 +2,7 @@ import { createApp } from "vue"
 import { create } from "naive-ui"
 import "normalize.css"
 import "github-markdown-css/github-markdown-light.css"
+import "highlight.js/styles/github.min.css"
 import App from "./App.vue"
 
 const app = createApp(App)
diff --git a/src/themes/createTheme.ts b/src/themes/createTheme.ts
deleted file mode 100644
index fb4073f..0000000
--- a/src/themes/createTheme.ts
+++ /dev/null
@@ -1,110 +0,0 @@
-import {
-  HighlightStyle,
-  type TagStyle,
-  syntaxHighlighting,
-} from "@codemirror/language"
-import { type Extension } from "@codemirror/state"
-import { EditorView } from "@codemirror/view"
-
-interface Options {
-  /**
-   * Theme variant. Determines which styles CodeMirror will apply by default.
-   */
-  variant: Variant
-
-  /**
-   * Settings to customize the look of the editor, like background, gutter, selection and others.
-   */
-  settings: Settings
-
-  /**
-   * Syntax highlighting styles.
-   */
-  styles: TagStyle[]
-}
-
-type Variant = "light" | "dark"
-
-interface Settings {
-  /**
-   * Editor background.
-   */
-  background: string
-
-  /**
-   * Default text color.
-   */
-  foreground: string
-
-  /**
-   * Caret color.
-   */
-  caret: string
-
-  /**
-   * Selection background.
-   */
-  selection: string
-
-  /**
-   * Background of highlighted lines.
-   */
-  lineHighlight: string
-
-  /**
-   * Gutter background.
-   */
-  gutterBackground: string
-
-  /**
-   * Text color inside gutter.
-   */
-  gutterForeground: string
-
-  gutterBorderRight: string
-}
-
-export const createTheme = ({
-  variant,
-  settings,
-  styles,
-}: Options): Extension => {
-  const theme = EditorView.theme(
-    {
-      // eslint-disable-next-line @typescript-eslint/naming-convention
-      "&": {
-        backgroundColor: settings.background,
-        color: settings.foreground,
-      },
-      ".cm-content": {
-        caretColor: settings.caret,
-      },
-      ".cm-cursor, .cm-dropCursor": {
-        borderLeftColor: settings.caret,
-      },
-      "&.cm-focused .cm-selectionBackgroundm .cm-selectionBackground, .cm-content ::selection":
-        {
-          backgroundColor: settings.selection,
-        },
-      ".cm-activeLine": {
-        backgroundColor: settings.lineHighlight,
-      },
-      ".cm-gutters": {
-        backgroundColor: settings.gutterBackground,
-        borderRight: settings.gutterBorderRight,
-        color: settings.gutterForeground,
-      },
-      ".cm-activeLineGutter": {
-        backgroundColor: settings.lineHighlight,
-      },
-    },
-    {
-      dark: variant === "dark",
-    },
-  )
-
-  const highlightStyle = HighlightStyle.define(styles)
-  const extension = [theme, syntaxHighlighting(highlightStyle)]
-
-  return extension
-}
diff --git a/src/themes/oneDark.ts b/src/themes/oneDark.ts
deleted file mode 100644
index 28551a3..0000000
--- a/src/themes/oneDark.ts
+++ /dev/null
@@ -1,149 +0,0 @@
-import { HighlightStyle, syntaxHighlighting } from "@codemirror/language"
-import { type Extension } from "@codemirror/state"
-import { EditorView } from "@codemirror/view"
-import { tags as t } from "@lezer/highlight"
-
-// Using https://github.com/one-dark/vscode-one-dark-theme/ as reference for the colors
-
-const chalky = "#e5c07b",
-  coral = "#e06c75",
-  cyan = "#56b6c2",
-  invalid = "#ffffff",
-  ivory = "#abb2bf",
-  stone = "#7d8799", // Brightened compared to original to increase contrast
-  malibu = "#61afef",
-  sage = "#98c379",
-  whiskey = "#d19a66",
-  violet = "#c678dd",
-  darkBackground = "#26262a",
-  highlightBackground = "#2c313a",
-  background = "#101014", // naive-ui
-  tooltipBackground = "#353a42",
-  selection = "#3E4451",
-  cursor = "#528bff"
-
-/// The editor theme styles for One Dark.
-const oneDarkTheme = EditorView.theme(
-  {
-    "&": {
-      color: ivory,
-      backgroundColor: background,
-    },
-
-    ".cm-content": {
-      caretColor: cursor,
-    },
-
-    ".cm-cursor, .cm-dropCursor": { borderLeftColor: cursor },
-    "&.cm-focused .cm-selectionBackground, .cm-selectionBackground, .cm-content ::selection":
-      { backgroundColor: selection },
-
-    ".cm-panels": { backgroundColor: darkBackground, color: ivory },
-    ".cm-panels.cm-panels-top": { borderBottom: "2px solid black" },
-    ".cm-panels.cm-panels-bottom": { borderTop: "2px solid black" },
-
-    ".cm-searchMatch": {
-      backgroundColor: "#72a1ff59",
-      outline: "1px solid #457dff",
-    },
-    ".cm-searchMatch.cm-searchMatch-selected": {
-      backgroundColor: "#6199ff2f",
-    },
-
-    ".cm-activeLine": { backgroundColor: "#6699ff0b" },
-    ".cm-selectionMatch": { backgroundColor: "#aafe661a" },
-
-    "&.cm-focused .cm-matchingBracket, &.cm-focused .cm-nonmatchingBracket": {
-      backgroundColor: "#bad0f847",
-    },
-
-    ".cm-gutters": {
-      backgroundColor: background,
-      color: stone,
-      border: "none",
-    },
-
-    ".cm-activeLineGutter": {
-      backgroundColor: highlightBackground,
-    },
-
-    ".cm-foldPlaceholder": {
-      backgroundColor: "transparent",
-      border: "none",
-      color: "#ddd",
-    },
-
-    ".cm-tooltip": {
-      border: "none",
-      backgroundColor: tooltipBackground,
-    },
-    ".cm-tooltip .cm-tooltip-arrow:before": {
-      borderTopColor: "transparent",
-      borderBottomColor: "transparent",
-    },
-    ".cm-tooltip .cm-tooltip-arrow:after": {
-      borderTopColor: tooltipBackground,
-      borderBottomColor: tooltipBackground,
-    },
-    ".cm-tooltip-autocomplete": {
-      "& > ul > li[aria-selected]": {
-        backgroundColor: highlightBackground,
-        color: ivory,
-      },
-    },
-  },
-  { dark: true },
-)
-
-/// The highlighting style for code in the One Dark theme.
-const oneDarkHighlightStyle = HighlightStyle.define([
-  { tag: t.keyword, color: violet },
-  {
-    tag: [t.name, t.deleted, t.character, t.propertyName, t.macroName],
-    color: coral,
-  },
-  { tag: [t.function(t.variableName), t.labelName], color: malibu },
-  { tag: [t.color, t.constant(t.name), t.standard(t.name)], color: whiskey },
-  { tag: [t.definition(t.name), t.separator], color: ivory },
-  {
-    tag: [
-      t.typeName,
-      t.className,
-      t.number,
-      t.changed,
-      t.annotation,
-      t.modifier,
-      t.self,
-      t.namespace,
-    ],
-    color: chalky,
-  },
-  {
-    tag: [
-      t.operator,
-      t.operatorKeyword,
-      t.url,
-      t.escape,
-      t.regexp,
-      t.link,
-      t.special(t.string),
-    ],
-    color: cyan,
-  },
-  { tag: [t.meta, t.comment], color: stone },
-  { tag: t.strong, fontWeight: "bold" },
-  { tag: t.emphasis, fontStyle: "italic" },
-  { tag: t.strikethrough, textDecoration: "line-through" },
-  { tag: t.link, color: stone, textDecoration: "underline" },
-  { tag: t.heading, fontWeight: "bold", color: coral },
-  { tag: [t.atom, t.bool, t.special(t.variableName)], color: whiskey },
-  { tag: [t.processingInstruction, t.string, t.inserted], color: sage },
-  { tag: t.invalid, color: invalid },
-])
-
-/// Extension to enable the One Dark theme (both the editor theme and
-/// the highlight style).
-export const oneDark: Extension = [
-  oneDarkTheme,
-  syntaxHighlighting(oneDarkHighlightStyle),
-]
diff --git a/src/themes/smoothy.ts b/src/themes/smoothy.ts
deleted file mode 100644
index b58cdc6..0000000
--- a/src/themes/smoothy.ts
+++ /dev/null
@@ -1,83 +0,0 @@
-import { tags as t } from "@lezer/highlight"
-import { createTheme } from "./createTheme"
-
-// Author: Kenneth Reitz
-export const smoothy = createTheme({
-  variant: "light",
-  settings: {
-    background: "#FFFFFF",
-    foreground: "#000000",
-    caret: "#000000",
-    selection: "#FFFD0054",
-    gutterBackground: "#FFFFFF",
-    gutterForeground: "#00000070",
-    gutterBorderRight: "none",
-    lineHighlight: "#00000008",
-  },
-  styles: [
-    {
-      tag: t.comment,
-      color: "#CFCFCF",
-    },
-    {
-      tag: [t.number, t.bool, t.null],
-      color: "#E66C29",
-    },
-    {
-      tag: [
-        t.className,
-        t.definition(t.propertyName),
-        t.function(t.variableName),
-        t.labelName,
-        t.definition(t.typeName),
-      ],
-      color: "#2EB43B",
-    },
-    {
-      tag: t.keyword,
-      color: "#D8B229",
-    },
-    {
-      tag: t.operator,
-      color: "#4EA44E",
-      fontWeight: "bold",
-    },
-    {
-      tag: [t.definitionKeyword, t.modifier],
-      color: "#925A47",
-    },
-    {
-      tag: t.string,
-      color: "#704D3D",
-    },
-    {
-      tag: t.typeName,
-      color: "#2F8996",
-    },
-    {
-      tag: [t.variableName, t.propertyName],
-      color: "#77ACB0",
-    },
-    {
-      tag: t.self,
-      color: "#77ACB0",
-      fontWeight: "bold",
-    },
-    {
-      tag: t.regexp,
-      color: "#E3965E",
-    },
-    {
-      tag: [t.tagName, t.angleBracket],
-      color: "#BAA827",
-    },
-    {
-      tag: t.attributeName,
-      color: "#B06520",
-    },
-    {
-      tag: t.derefOperator,
-      color: "#000",
-    },
-  ],
-})