diff --git a/book.json b/book.json
index 62681ca..5933ab4 100644
--- a/book.json
+++ b/book.json
@@ -1,91 +1,91 @@
 {
-    "author": "Translated by Peng Hailin, laxers@gmail.com",
-    "description": "这是一本 CCNA 教程",
-    "generator": "xfoss.com 网站",
-    "links": {
-        "sharing": {
-            "weibo": null
-        },
-        "sidebar": {
-            "60天通过CCNA考试": "https://ccna60d.xfoss.com/"
-        }
+  "author": "Translated by Peng Hailin, laxers@gmail.com",
+  "description": "这是一本 CCNA 教程",
+  "generator": "xfoss.com 网站",
+  "links": {
+    "sharing": {
+      "weibo": null
     },
-    "pdf": {
-        "fontSize": 12,
-        "margin": {
-            "bottom": 12,
-            "left": 16,
-            "right": 12,
-            "top": 18
-        },
-        "paperSize": "a4"
-    },
-    "plugins" : [
-        "highlight-code",
-        "fontsettings",
-        "theme-comscore",
-        "include-codeblock@^3.0.2",
-        "tbfed-pagefooter@^0.0.1",
-        "sectionx@^3.1.0",
-        "sitemap",
-        "code",
-        "-lunr",
-        "-search",
-        "-sharing",
-        "-fontsettings",
-        "cuav-chapters",
-        "heading-anchors",
-        "splitter",
-        "theme-door",
-        "search-pro-fixed"
-    ],
-    "variables": {
-        "doorTheme": {
-            "nav": [
-                {
-                    "url": "https://rust-lang.xfoss.com",
-                    "target": "_blank",
-                    "name": "学习 Rust 编程语言 · ⚙️"
-                },
-                {
-                    "url": "https://java-lang.xfoss.com",
-                    "target": "_blank",
-                    "name": "学习 Java 编程语言 · ☕"
-                },
-                {
-                    "url": "https://ts-lang.xfoss.com",
-                    "target": "_blank",
-                    "name": "学习 TypeScript 语言 · 🖹"
-                },
-                {
-                    "url": "https://xfoss.com",
-                    "target": "_blank",
-                    "name": "捐助，donation · 💰"
-                }
-            ]
-        }
-    },
-    "pluginsConfig": {
-        "doorTheme": {
-            "search-placeholder": "请输入关键字搜索",
-            "logo": "./images/computer-network-services.png",
-            "favicon": "./images/network-svgrepo-com.ico"
-        },
-        "include-codeblock": {
-            "template": "ace",
-            "unindent": true,
-            "edit": true
-        },
-        "tbfed-pagefooter": {
-            "copyright": "Copyleft @ ccna.xfoss.com 2022",
-            "modify_label": "该文件修订时间：",
-            "modify_format": "YYYY-MM-DD HH:mm:ss"
-        },
-        "sectionx": {
-            "tag": "b"
-        },
-        "sitemap": {
-            "hostname": "https://ccna.xfoss.com/"
-        }
+    "sidebar": {
+      "60天通过CCNA考试": "https://ccna60d.xfoss.com/"
     }
+  },
+  "pdf": {
+    "fontSize": 12,
+    "margin": {
+      "bottom": 12,
+      "left": 16,
+      "right": 12,
+      "top": 18
+    },
+    "paperSize": "a4"
+  },
+  "plugins": [
+    "highlight-code",
+    "include-codeblock@^3.0.2",
+    "tbfed-pagefooter@^0.0.1",
+    "sectionx@^3.1.0",
+    "sitemap",
+    "code",
+    "page-toc-button",
+    "-lunr",
+    "-search",
+    "-sharing",
+    "cuav-chapters",
+    "add-js-css",
+    "heading-anchors",
+    "navigation",
+    "splitter",
+    "search-pro2"
+  ],
+  "pluginsConfig": {
+    "page-toc-button": {
+      "maxTocDepth": 2,
+      "minTocSize": 2
+    },
+    "fontsettings": {
+      "theme": "white",
+      "family": "sans",
+      "size": 2
+    },
+    "include-codeblock": {
+      "template": "ace",
+      "unindent": true,
+      "edit": false
+    },
+    "tbfed-pagefooter": {
+      "copyright": "Copyleft @ ccna.xfoss.com 2022 - now",
+      "modify_label": "该文件修订时间：",
+      "modify_format": "YYYY-MM-DD HH:mm:ss"
+    },
+    "sectionx": {
+      "tag": "b"
+    },
+    "add-js-css": {
+      "css": [ "./custom-style.css" ]
+    },
+    "navigation": {
+      "navigatorList": [
+        {
+          "url": "https://rust-lang.xfoss.com",
+          "name": "学习 Rust 编程语言 · ⚙️"
+        },
+        {
+          "url": "https://java-lang.xfoss.com",
+          "name": "学习 Java 编程语言 · ☕"
+        },
+        {
+          "url": "https://ts-lang.xfoss.com",
+          "name": "学习 TypeScript 语言 · 🖹"
+        },
+        {
+          "url": "https://xfoss.com",
+          "name": "捐助，donation · 💰"
+        }
+      ]
+    },
+    "sitemap": {
+      "hostname": "https://ccna.xfoss.com/"
+    }
+  }
 }
diff --git a/custom-style.css b/custom-style.css
new file mode 100644
index 0000000..63b3b00
--- /dev/null
+++ b/custom-style.css
@@ -0,0 +1,53 @@
+div.book-header {
+  position: fixed;
+}
+
+::-webkit-scrollbar {
+  width: 5px;
+}
+
+::-webkit-scrollbar-track {
+  background-color: #e4e4e4;
+  border-radius: 100px;
+}
+
+::-webkit-scrollbar-thumb {
+  box-shadow: inset 0 0 6px rgba(0, 0, 0, 0.3);
+}
+
+li.nav-item>a {
+  text-decoration: none;
+}
+
+i.fa {
+  font-weight: bold;
+  color: #5f5f5f;
+}
+
+.page-toc-menu {
+  background-color: #555555 !important;
+  color: #cccccc !important;
+  border-radius: 10px;
+}
+
+@media only screen and (min-width: 1024px) {
+  div.book-header {
+    top: 30px;
+  }
+  .nav-list .nav-item a {
+    font-size: small !important;
+  }
+  .nav-list .nav-item a:hover {
+    color: #f59542 !important;
+  }
+}
+
+@media only screen and (max-width: 1024px) {
+  ul.nav-list {
+    display: none;
+  }
+
+  div.book-headr {
+    top: 5px;
+  }
+}
diff --git a/package-lock.json b/package-lock.json
index cde185f..efa9633 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -12,20 +12,24 @@
         "gitbook-plugin-ace": "^0.3.2",
         "gitbook-plugin-code": "^0.1.0",
         "gitbook-plugin-include-codeblock": "^3.2.3",
-        "gitbook-plugin-search-pro-fixed": "^1.0.1",
         "gitbook-plugin-sectionx": "^3.1.0",
         "gitbook-plugin-sitemap": "^1.2.0",
         "gitbook-plugin-splitter": "^0.0.8",
-        "gitbook-plugin-tbfed-pagefooter": "^0.0.1",
-        "gitbook-plugin-theme-door": "^1.0.2"
+        "gitbook-plugin-tbfed-pagefooter": "^0.0.1"
       },
       "devDependencies": {
+        "gitbook-plugin-add-js-css": "^0.0.1",
         "gitbook-plugin-back-to-top-button": "^0.1.4",
         "gitbook-plugin-cuav-chapters": "^1.0.3",
         "gitbook-plugin-fontsettings": "^2.0.0",
         "gitbook-plugin-heading-anchors": "^1.0.3",
         "gitbook-plugin-highlight-code": "^1.0.0",
+        "gitbook-plugin-navigation": "^0.1.1",
+        "gitbook-plugin-page-toc-button": "^0.1.1",
+        "gitbook-plugin-search-pro2": "^1.0.2",
+        "gitbook-plugin-sharing": "^1.0.2",
         "gitbook-plugin-theme-comscore": "^0.0.3",
+        "gitbook-plugin-yh-changyan": "^1.0.0",
         "honkit": "^4.0.4"
       }
     },
@@ -1140,6 +1144,25 @@
         "gitbook": ">=3.x.x"
       }
     },
+    "node_modules/gitbook-plugin-add-js-css": {
+      "version": "0.0.1",
+      "resolved": "https://registry.npmjs.org/gitbook-plugin-add-js-css/-/gitbook-plugin-add-js-css-0.0.1.tgz",
+      "integrity": "sha512-luUm9rYKF9KI6Wqh/jX+C1Aqo+e1XniE6IqKVoePY69qqKSudvN/CV5741r7yhsioM3hKCtvCDOeoemtBBRudg==",
+      "dev": true,
+      "dependencies": {
+        "lodash": "4.17.4",
+        "tmp": "0.0.28"
+      },
+      "engines": {
+        "gitbook": ">2.x.x"
+      }
+    },
+    "node_modules/gitbook-plugin-add-js-css/node_modules/lodash": {
+      "version": "4.17.4",
+      "resolved": "https://registry.npmjs.org/lodash/-/lodash-4.17.4.tgz",
+      "integrity": "sha512-6X37Sq9KCpLSXEh8uM12AKYlviHPNNk4RxiGBn4cmKGJinbXBneWIV7iE/nXkM928O7ytHcHb6+X6Svl0f4hXg==",
+      "dev": true
+    },
     "node_modules/gitbook-plugin-back-to-top-button": {
       "version": "0.1.4",
       "resolved": "https://registry.npmjs.org/gitbook-plugin-back-to-top-button/-/gitbook-plugin-back-to-top-button-0.1.4.tgz",
@@ -1246,6 +1269,24 @@
         "gitbook": ">=3.0.0-pre.0"
       }
     },
+    "node_modules/gitbook-plugin-navigation": {
+      "version": "0.1.1",
+      "resolved": "https://registry.npmjs.org/gitbook-plugin-navigation/-/gitbook-plugin-navigation-0.1.1.tgz",
+      "integrity": "sha512-HrwZu24nOFbeFbz12FAZDFYkBhF14LsAmjHDcsKQhsr/kqfarzzGn0LuaoPeFyCWnvOUTuOvW5sNYyG0+LjsWg==",
+      "dev": true,
+      "engines": {
+        "gitbook": ">=2.4.3"
+      }
+    },
+    "node_modules/gitbook-plugin-page-toc-button": {
+      "version": "0.1.1",
+      "resolved": "https://registry.npmjs.org/gitbook-plugin-page-toc-button/-/gitbook-plugin-page-toc-button-0.1.1.tgz",
+      "integrity": "sha512-htlxoEWhPkKze4W8xaWJ6KmC95e706dEVH06dKQSmgMEXzfovtxW67PxDwy78f0JB4z1B/3ZkaEoFmbWazAMow==",
+      "dev": true,
+      "engines": {
+        "gitbook": ">=3.1.1"
+      }
+    },
     "node_modules/gitbook-plugin-search": {
       "version": "2.2.1",
       "resolved": "https://registry.npmjs.org/gitbook-plugin-search/-/gitbook-plugin-search-2.2.1.tgz",
@@ -1255,10 +1296,11 @@
         "gitbook": ">=3.0.0-pre.0"
       }
     },
-    "node_modules/gitbook-plugin-search-pro-fixed": {
-      "version": "1.0.1",
-      "resolved": "https://registry.npmjs.org/gitbook-plugin-search-pro-fixed/-/gitbook-plugin-search-pro-fixed-1.0.1.tgz",
-      "integrity": "sha512-X6pBgfN54D3Ij+iF4cw44PZCdOvjnqboEoi0bsolEYPzcJOXFiiemxYt+rit95T8UbSaML38o8SCPzl9grM/zA==",
+    "node_modules/gitbook-plugin-search-pro2": {
+      "version": "1.0.2",
+      "resolved": "https://registry.npmjs.org/gitbook-plugin-search-pro2/-/gitbook-plugin-search-pro2-1.0.2.tgz",
+      "integrity": "sha512-1eeqVIToQnbjXxIpDPfd86vaZLWP43WKZCKzxqzWGaAQCgNb8obn7VX6Kw1xM3tdaHsOoe9m5+UeorxH60lpOA==",
+      "dev": true,
       "dependencies": {
         "html-entities": "1.2.0"
       },
@@ -1277,6 +1319,24 @@
         "gitbook": ">=3.x.x"
       }
     },
+    "node_modules/gitbook-plugin-sharing": {
+      "version": "1.0.2",
+      "resolved": "https://registry.npmjs.org/gitbook-plugin-sharing/-/gitbook-plugin-sharing-1.0.2.tgz",
+      "integrity": "sha512-PdBmQdZWSgUYwpdqU/DpnfCcwHn8uhFT4aU0Tu+vipJxUDPW21KdXq+TOR36qlw/rz5NSVTYEzUnamW9G+q7aQ==",
+      "dev": true,
+      "dependencies": {
+        "lodash": "^3.10.1"
+      },
+      "engines": {
+        "gitbook": ">=2.4.0"
+      }
+    },
+    "node_modules/gitbook-plugin-sharing/node_modules/lodash": {
+      "version": "3.10.1",
+      "resolved": "https://registry.npmjs.org/lodash/-/lodash-3.10.1.tgz",
+      "integrity": "sha512-9mDDwqVIma6OZX79ZlDACZl8sBm0TEnkf99zV3iMA4GzkIT/9hiqP5mY0HoT1iNLCrKc/R1HByV+yJfRWVJryQ==",
+      "dev": true
+    },
     "node_modules/gitbook-plugin-sitemap": {
       "version": "1.2.0",
       "resolved": "https://registry.npmjs.org/gitbook-plugin-sitemap/-/gitbook-plugin-sitemap-1.2.0.tgz",
@@ -1316,12 +1376,13 @@
         "gitbook": "*"
       }
     },
-    "node_modules/gitbook-plugin-theme-door": {
-      "version": "1.0.2",
-      "resolved": "https://registry.npmjs.org/gitbook-plugin-theme-door/-/gitbook-plugin-theme-door-1.0.2.tgz",
-      "integrity": "sha512-8UjmoogIV6vRQZrs2RnJHV1222nyiS1ck0WtLCNSFi65Xv0FnT4C4FAe55QjG0qdAak6HnXAiGTny2L1ecC13Q==",
+    "node_modules/gitbook-plugin-yh-changyan": {
+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/gitbook-plugin-yh-changyan/-/gitbook-plugin-yh-changyan-1.0.0.tgz",
+      "integrity": "sha512-tq1YdYKwVsXv3HQYi7ImAJwaRL6g/ERhkH1fScUbdLOKY5IL7wq6ljAd/e8SErrW6EDlTxJFbdNSiejRxLh+MQ==",
+      "dev": true,
       "engines": {
-        "gitbook": ">=3.2.3"
+        "gitbook": "*"
       }
     },
     "node_modules/github-slugid": {
@@ -1516,6 +1577,7 @@
       "version": "1.2.0",
       "resolved": "https://registry.npmjs.org/html-entities/-/html-entities-1.2.0.tgz",
       "integrity": "sha512-0md7tlUUyb0BEQGsZzbqty1CgV6RESOoxdivt94AScqhBhYsPCCQCOaGvur/RospMjYpPJ7iFe3zw4Bu4SVA8g==",
+      "dev": true,
       "engines": [
         "node >= 0.4.0"
       ]
@@ -4348,6 +4410,24 @@
         "html-escape": "^1.0.2"
       }
     },
+    "gitbook-plugin-add-js-css": {
+      "version": "0.0.1",
+      "resolved": "https://registry.npmjs.org/gitbook-plugin-add-js-css/-/gitbook-plugin-add-js-css-0.0.1.tgz",
+      "integrity": "sha512-luUm9rYKF9KI6Wqh/jX+C1Aqo+e1XniE6IqKVoePY69qqKSudvN/CV5741r7yhsioM3hKCtvCDOeoemtBBRudg==",
+      "dev": true,
+      "requires": {
+        "lodash": "4.17.4",
+        "tmp": "0.0.28"
+      },
+      "dependencies": {
+        "lodash": {
+          "version": "4.17.4",
+          "resolved": "https://registry.npmjs.org/lodash/-/lodash-4.17.4.tgz",
+          "integrity": "sha512-6X37Sq9KCpLSXEh8uM12AKYlviHPNNk4RxiGBn4cmKGJinbXBneWIV7iE/nXkM928O7ytHcHb6+X6Svl0f4hXg==",
+          "dev": true
+        }
+      }
+    },
     "gitbook-plugin-back-to-top-button": {
       "version": "0.1.4",
       "resolved": "https://registry.npmjs.org/gitbook-plugin-back-to-top-button/-/gitbook-plugin-back-to-top-button-0.1.4.tgz",
@@ -4422,16 +4502,29 @@
         "lunr": "0.5.12"
       }
     },
+    "gitbook-plugin-navigation": {
+      "version": "0.1.1",
+      "resolved": "https://registry.npmjs.org/gitbook-plugin-navigation/-/gitbook-plugin-navigation-0.1.1.tgz",
+      "integrity": "sha512-HrwZu24nOFbeFbz12FAZDFYkBhF14LsAmjHDcsKQhsr/kqfarzzGn0LuaoPeFyCWnvOUTuOvW5sNYyG0+LjsWg==",
+      "dev": true
+    },
+    "gitbook-plugin-page-toc-button": {
+      "version": "0.1.1",
+      "resolved": "https://registry.npmjs.org/gitbook-plugin-page-toc-button/-/gitbook-plugin-page-toc-button-0.1.1.tgz",
+      "integrity": "sha512-htlxoEWhPkKze4W8xaWJ6KmC95e706dEVH06dKQSmgMEXzfovtxW67PxDwy78f0JB4z1B/3ZkaEoFmbWazAMow==",
+      "dev": true
+    },
     "gitbook-plugin-search": {
       "version": "2.2.1",
       "resolved": "https://registry.npmjs.org/gitbook-plugin-search/-/gitbook-plugin-search-2.2.1.tgz",
       "integrity": "sha512-oP9jhaKFUVPo756G9ywuuI43YdkZClSjfpFzNKe/a/Rcn3oVsrAM/PjdQ+dt65KfZVo3iW1LY4WdiZnNqzRP8g==",
       "dev": true
     },
-    "gitbook-plugin-search-pro-fixed": {
-      "version": "1.0.1",
-      "resolved": "https://registry.npmjs.org/gitbook-plugin-search-pro-fixed/-/gitbook-plugin-search-pro-fixed-1.0.1.tgz",
-      "integrity": "sha512-X6pBgfN54D3Ij+iF4cw44PZCdOvjnqboEoi0bsolEYPzcJOXFiiemxYt+rit95T8UbSaML38o8SCPzl9grM/zA==",
+    "gitbook-plugin-search-pro2": {
+      "version": "1.0.2",
+      "resolved": "https://registry.npmjs.org/gitbook-plugin-search-pro2/-/gitbook-plugin-search-pro2-1.0.2.tgz",
+      "integrity": "sha512-1eeqVIToQnbjXxIpDPfd86vaZLWP43WKZCKzxqzWGaAQCgNb8obn7VX6Kw1xM3tdaHsOoe9m5+UeorxH60lpOA==",
+      "dev": true,
       "requires": {
         "html-entities": "1.2.0"
       }
@@ -4444,6 +4537,23 @@
         "cheerio": "*"
       }
     },
+    "gitbook-plugin-sharing": {
+      "version": "1.0.2",
+      "resolved": "https://registry.npmjs.org/gitbook-plugin-sharing/-/gitbook-plugin-sharing-1.0.2.tgz",
+      "integrity": "sha512-PdBmQdZWSgUYwpdqU/DpnfCcwHn8uhFT4aU0Tu+vipJxUDPW21KdXq+TOR36qlw/rz5NSVTYEzUnamW9G+q7aQ==",
+      "dev": true,
+      "requires": {
+        "lodash": "^3.10.1"
+      },
+      "dependencies": {
+        "lodash": {
+          "version": "3.10.1",
+          "resolved": "https://registry.npmjs.org/lodash/-/lodash-3.10.1.tgz",
+          "integrity": "sha512-9mDDwqVIma6OZX79ZlDACZl8sBm0TEnkf99zV3iMA4GzkIT/9hiqP5mY0HoT1iNLCrKc/R1HByV+yJfRWVJryQ==",
+          "dev": true
+        }
+      }
+    },
     "gitbook-plugin-sitemap": {
       "version": "1.2.0",
       "resolved": "https://registry.npmjs.org/gitbook-plugin-sitemap/-/gitbook-plugin-sitemap-1.2.0.tgz",
@@ -4471,10 +4581,11 @@
       "integrity": "sha512-GNxYW3n10Pa6EAGx+7+dDVcyf7VambzyO6Mt5Y3x62fntyIOQWtqX46RgMZuhHbOtIeN/BR6T0DKlwoeUhmY0w==",
       "dev": true
     },
-    "gitbook-plugin-theme-door": {
-      "version": "1.0.2",
-      "resolved": "https://registry.npmjs.org/gitbook-plugin-theme-door/-/gitbook-plugin-theme-door-1.0.2.tgz",
-      "integrity": "sha512-8UjmoogIV6vRQZrs2RnJHV1222nyiS1ck0WtLCNSFi65Xv0FnT4C4FAe55QjG0qdAak6HnXAiGTny2L1ecC13Q=="
+    "gitbook-plugin-yh-changyan": {
+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/gitbook-plugin-yh-changyan/-/gitbook-plugin-yh-changyan-1.0.0.tgz",
+      "integrity": "sha512-tq1YdYKwVsXv3HQYi7ImAJwaRL6g/ERhkH1fScUbdLOKY5IL7wq6ljAd/e8SErrW6EDlTxJFbdNSiejRxLh+MQ==",
+      "dev": true
     },
     "github-slugid": {
       "version": "1.0.1",
@@ -4637,7 +4748,8 @@
     "html-entities": {
       "version": "1.2.0",
       "resolved": "https://registry.npmjs.org/html-entities/-/html-entities-1.2.0.tgz",
-      "integrity": "sha512-0md7tlUUyb0BEQGsZzbqty1CgV6RESOoxdivt94AScqhBhYsPCCQCOaGvur/RospMjYpPJ7iFe3zw4Bu4SVA8g=="
+      "integrity": "sha512-0md7tlUUyb0BEQGsZzbqty1CgV6RESOoxdivt94AScqhBhYsPCCQCOaGvur/RospMjYpPJ7iFe3zw4Bu4SVA8g==",
+      "dev": true
     },
     "html-escape": {
       "version": "1.0.2",
diff --git a/package.json b/package.json
index 6d5a75f..82a1cd2 100644
--- a/package.json
+++ b/package.json
@@ -26,23 +26,27 @@
   },
   "homepage": "https://github.com/gnu4cn/ccna60d#readme",
   "devDependencies": {
+    "gitbook-plugin-add-js-css": "^0.0.1",
     "gitbook-plugin-back-to-top-button": "^0.1.4",
     "gitbook-plugin-cuav-chapters": "^1.0.3",
     "gitbook-plugin-fontsettings": "^2.0.0",
     "gitbook-plugin-heading-anchors": "^1.0.3",
     "gitbook-plugin-highlight-code": "^1.0.0",
+    "gitbook-plugin-navigation": "^0.1.1",
+    "gitbook-plugin-page-toc-button": "^0.1.1",
+    "gitbook-plugin-search-pro2": "^1.0.2",
+    "gitbook-plugin-sharing": "^1.0.2",
     "gitbook-plugin-theme-comscore": "^0.0.3",
+    "gitbook-plugin-yh-changyan": "^1.0.0",
     "honkit": "^4.0.4"
   },
   "dependencies": {
     "gitbook-plugin-ace": "^0.3.2",
     "gitbook-plugin-code": "^0.1.0",
     "gitbook-plugin-include-codeblock": "^3.2.3",
-    "gitbook-plugin-search-pro-fixed": "^1.0.1",
     "gitbook-plugin-sectionx": "^3.1.0",
     "gitbook-plugin-sitemap": "^1.2.0",
     "gitbook-plugin-splitter": "^0.0.8",
-    "gitbook-plugin-tbfed-pagefooter": "^0.0.1",
-    "gitbook-plugin-theme-door": "^1.0.2"
+    "gitbook-plugin-tbfed-pagefooter": "^0.0.1"
   }
 }