diff --git a/public/turtorial/01/README.md b/public/turtorial/01/README.md
index 23760c6..f474ea2 100644
--- a/public/turtorial/01/README.md
+++ b/public/turtorial/01/README.md
@@ -11,6 +11,9 @@
   color: red;
 }
 ```
+```js
+console.log("122")
+```
 
 ## 什么是 HTML
 
diff --git a/public/turtorial/02/README.md b/public/turtorial/02/README.md
index 302946b..4452c6a 100644
--- a/public/turtorial/02/README.md
+++ b/public/turtorial/02/README.md
@@ -1 +1,7 @@
-# 什么是 CSS
\ No newline at end of file
+# 什么是 CSS
+
+```css
+.greeting {
+    color: red;
+}
+```
\ No newline at end of file
diff --git a/src/App.vue b/src/App.vue
index 8ea6b6d..0407299 100644
--- a/src/App.vue
+++ b/src/App.vue
@@ -29,10 +29,10 @@ whenever(ctrl_r, () => {})
     :date-locale="dateZhCN"
     inline-theme-disabled
   >
-    <n-split :default-size="1 / 3" min="300px" max="700px">
+    <n-split :default-size="1 / 3" min="300px" max="800px">
       <template #1><Tutorial /></template>
       <template #2>
-        <n-split direction="vertical">
+        <n-split direction="vertical" min="200px">
           <template #1>
             <Editors />
           </template>
diff --git a/src/components/Editors.vue b/src/components/Editors.vue
index dcc00d8..8571eba 100644
--- a/src/components/Editors.vue
+++ b/src/components/Editors.vue
@@ -2,8 +2,8 @@
   <n-tabs
     style="height: 100%"
     pane-class="pane"
-    :default-value="currentTab"
-    type="segment"
+    :value="tab"
+    type="card"
     @update:value="changeTab"
   >
     <n-tab-pane name="html" tab="HTML">
@@ -24,11 +24,11 @@
       </template>
       <Editor language="css" :font-size="size" v-model:value="css" />
     </n-tab-pane>
-    <n-tab-pane name="js" tab="JavaScript">
+    <n-tab-pane name="js" tab="JS">
       <template #tab>
         <n-flex align="center">
           <Icon icon="skill-icons:javascript" :width="20"></Icon>
-          <span>JavaScript</span>
+          <span>JS</span>
         </n-flex>
       </template>
       <Editor language="js" :font-size="size" v-model:value="js" />
@@ -71,14 +71,13 @@
 <script lang="ts" setup>
 import { Icon } from "@iconify/vue"
 import Editor from "./Editor.vue"
-import { useStorage } from "@vueuse/core"
-import { html, css, js, reset, size, changeSize } from "../store"
+import { html, css, js, reset, tab, size } from "../store"
 
-const currentTab = useStorage("web-tab", "html")
-
-function changeTab(tab: "html" | "css" | "js" | "actions") {
-  if (tab === "actions") return
-  currentTab.value = tab
+function changeTab(name: string) {
+  tab.value = name
+}
+function changeSize(num: number) {
+  size.value = num
 }
 </script>
 <style scoped>
diff --git a/src/components/Preview.vue b/src/components/Preview.vue
index 2d50d94..0b5e5eb 100644
--- a/src/components/Preview.vue
+++ b/src/components/Preview.vue
@@ -46,9 +46,10 @@ onMounted(preview)
 </script>
 <style scoped>
 .title {
-  height: 40px;
-  background-color: rgb(247, 247, 250);
+  height: 43px;
   padding: 0 20px;
+  border-bottom: 1px solid rgb(239, 239, 245);
+  box-sizing: border-box;
 }
 .titleText {
   font-size: 16px;
diff --git a/src/components/Tutorial.vue b/src/components/Tutorial.vue
index 75627d4..ec9aa71 100644
--- a/src/components/Tutorial.vue
+++ b/src/components/Tutorial.vue
@@ -7,24 +7,35 @@
         <n-button text @click="prev" :disabled="step === '01'">
           <Icon :width="24" icon="pepicons-pencil:arrow-left"></Icon>
         </n-button>
-        <n-button text @click="next" :disabled="end">
+        <n-button text @click="next" :disabled="last">
           <Icon :width="24" icon="pepicons-pencil:arrow-right"></Icon>
         </n-button>
       </n-flex>
     </n-flex>
-    <div class="markdown-body" v-html="content"></div>
+    <div class="markdown-body" v-html="content" ref="$content"></div>
   </div>
 </template>
 <script lang="ts" setup>
 import { Icon } from "@iconify/vue"
-import { step, prev, next } from "../store"
-import { onMounted, ref, shallowRef, watch } from "vue"
+import { tab, html, js, css } from "../store"
+import { onMounted, ref, useTemplateRef, watch } from "vue"
 import { marked } from "marked"
-import { markedHighlight } from "marked-highlight"
-import hljs from "highlight.js"
+import { useStorage } from "@vueuse/core"
 
-const end = ref(false)
-const content = shallowRef("")
+const step = useStorage("web-turtorial-step", "01")
+const last = ref(false)
+const content = ref("")
+const $content = useTemplateRef("$content")
+
+function prev() {
+  let num = parseInt(step.value) - 1
+  step.value = num.toString().padStart(2, "0")
+}
+
+function next() {
+  let num = parseInt(step.value) + 1
+  step.value = num.toString().padStart(2, "0")
+}
 
 async function getContent() {
   const res = await fetch(`/turtorial/${step.value}/README.md`)
@@ -32,29 +43,49 @@ async function getContent() {
   if (!!data) {
     const html = await marked.parse(data, { async: true })
     content.value = html
-    end.value = false
+    last.value = false
   } else {
-    end.value = true
+    content.value = ""
+    last.value = true
   }
 }
 
-onMounted(() => {
-  getContent()
-  marked.use({
-    gfm: true,
-    async: true,
+// 用 js 来写的，可以换成 vue 的方式
+function addCopyButton() {
+  const div = document.createElement("div")
+  div.className = "my-action-btn"
+  const pres = $content.value!.querySelectorAll("pre")
+  pres.forEach((pre) => {
+    let timer = 0
+    const copy = div.cloneNode(true) as HTMLDivElement
+    pre.appendChild(copy)
+    copy.onclick = () => {
+      // 功能
+      const outer = pre.childNodes[0] as HTMLPreElement
+      const match = outer.className.match(/-(.*)/)
+      let lang = "html"
+      if (match) lang = match[1].toLowerCase()
+      tab.value = lang
+      if (lang === "html") html.value = pre.textContent
+      if (lang === "css") css.value = pre.textContent
+      if (lang === "js") js.value = pre.textContent
+      // 样式
+      copy.classList.add("click")
+      clearTimeout(timer)
+      timer = setTimeout(() => {
+        copy.classList.remove("click")
+      }, 1000)
+    }
   })
-  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)
+}
+
+async function render() {
+  await getContent()
+  addCopyButton()
+}
+
+onMounted(render)
+watch(step, render)
 </script>
 <style scoped>
 .container {
@@ -63,10 +94,11 @@ watch(step, getContent)
   height: 100%;
 }
 .title {
-  height: 40px;
-  background-color: rgb(247, 247, 250);
+  height: 43px;
   padding: 0 20px;
   flex-shrink: 0;
+  border-bottom: 1px solid rgb(239, 239, 245);
+  box-sizing: border-box;
 }
 .preview {
   font-size: 16px;
@@ -77,3 +109,22 @@ watch(step, getContent)
   overflow: auto;
 }
 </style>
+<style>
+.markdown-body pre {
+  position: relative;
+}
+.my-action-btn {
+  position: absolute;
+  top: 0;
+  right: 0;
+  padding: 1rem;
+  cursor: pointer;
+  border-radius: 0.4rem;
+}
+.my-action-btn::before {
+  content: "替换";
+}
+.my-action-btn.click::before {
+  content: "已替换";
+}
+</style>
diff --git a/src/main.ts b/src/main.ts
index f712e23..eb06613 100644
--- a/src/main.ts
+++ b/src/main.ts
@@ -1,10 +1,28 @@
 import { createApp } from "vue"
 import { create } from "naive-ui"
+import { marked } from "marked"
 import "normalize.css"
 import "github-markdown-css/github-markdown-light.css"
 import "highlight.js/styles/github.min.css"
 import App from "./App.vue"
 
+import { markedHighlight } from "marked-highlight"
+import hljs from "highlight.js"
+
+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
+    },
+  }),
+)
+
 const app = createApp(App)
 const naive = create()
 app.use(naive)
diff --git a/src/store.ts b/src/store.ts
index f0e03c8..dc66fd0 100644
--- a/src/store.ts
+++ b/src/store.ts
@@ -3,12 +3,16 @@ import { useStorage } from "@vueuse/core"
 const defaultHTML = `<div class="welcome">黄岩一职</div>`
 const defaultCSS = `.welcome {
     color: red;
+    font-size: 24px;
 }`
 
 export const html = useStorage("web-html", defaultHTML)
 export const css = useStorage("web-css", defaultCSS)
 export const js = useStorage("web-js", "")
 
+export const tab = useStorage("web-tab", "html")
+export const size = useStorage("web-fontsize", 24)
+
 export function reset(lang: "html" | "css" | "js") {
   if (lang === "html") {
     html.value = defaultHTML
@@ -18,18 +22,3 @@ export function reset(lang: "html" | "css" | "js") {
     js.value = ""
   }
 }
-
-export const size = useStorage("web-fontsize", 24)
-export function changeSize(num: number) {
-  size.value = num
-}
-
-export const step = useStorage("web-turtorial-step", "01")
-export function prev() {
-  let num = parseInt(step.value) - 1
-  step.value = num.toString().padStart(2, "0")
-}
-export function next() {
-  let num = parseInt(step.value) + 1
-  step.value = num.toString().padStart(2, "0")
-}