diff --git "a/.gitlab/issue_templates/\346\210\221\350\246\201\350\264\241\347\214\256.md" "b/.gitlab/issue_templates/\346\210\221\350\246\201\350\264\241\347\214\256.md"
new file mode 100644
index 0000000000000000000000000000000000000000..a76d54967dab2b50e0de35b1d22497cf3c733cb9
--- /dev/null
+++ "b/.gitlab/issue_templates/\346\210\221\350\246\201\350\264\241\347\214\256.md"
@@ -0,0 +1,23 @@
+## 贡献类型
+
+- [ ] 补充学习资料
+- [ ] 补充知识点
+
+> 填写说明：在对应类型的中括号/方括号中填上`x` 即可
+
+## 所属知识点
+
+- 阶段
+  - 一级知识点
+    - 二级知识点
+      - 三级知识点
+        - 四级知识点
+
+> 填写说明： 初阶/中阶/高阶 >> 一级知识点 >> 二级知识点 （依次类推）
+
+## 补充内容
+
++ 
++ 
+
+> 填写说明：填写补充知识点的名称或学习资料名称+链接，如果有多个知识点或学习资料补充，在补充内容中依次提交即可
diff --git "a/.gitlab/merge_request_templates/\346\210\221\350\246\201\350\264\241\347\214\256.md" "b/.gitlab/merge_request_templates/\346\210\221\350\246\201\350\264\241\347\214\256.md"
new file mode 100644
index 0000000000000000000000000000000000000000..25077da7193d148e8cd5102d737e9d20480a2e21
--- /dev/null
+++ "b/.gitlab/merge_request_templates/\346\210\221\350\246\201\350\264\241\347\214\256.md"
@@ -0,0 +1,16 @@
+## 贡献类型
+
+- [ ] 补充学习资料
+- [ ] 补充知识点
+
+> 填写说明：在对应类型的中括号/方括号中填上`x` 即可
+
+## 所属知识点
+
+- 阶段
+  - 一级知识点
+    - 二级知识点
+      - 三级知识点
+        - 四级知识点
+
+> 填写说明： 初阶/中阶/高阶 >> 一级知识点 >> 二级知识点 （依次类推）
\ No newline at end of file
diff --git a/config.toml b/config.toml
index f80763b6b884a79c8158478a7eefe171f17887a5..1327fc0a373b6b0613f44dbaea5fb55f63a42ba3 100644
--- a/config.toml
+++ b/config.toml
@@ -1,7 +1,7 @@
 baseURL = "https://codechina.gitcode.host/developer-roadmap/backend/intro/"
 #baseURL = "/"
 Languages = "zh-cn"
-title = "后端开发 - CSDN IT 人才成长路线图"
+title = "后端 - IT技术知识开源图谱"
 theme = ["dot","hugo-theme-pdf-js"]
 
 [markup.goldmark.renderer]
@@ -51,8 +51,8 @@ link = "https://codechina.csdn.net/codechina/developer-roadmap/backend/intro"
 
 # banner
 [params.banner]
-title = "CSDN IT 人才成长路线图"
-subtitle = "后端开发技术路线图"
+title = "IT技术知识开源图谱"
+subtitle = "后端技术学习路线图"
 bg_image = "images/banner.jpg"
 placeholder = "输入关键词"
 
@@ -163,28 +163,34 @@ hasChildren = true
 
 [[menu.main]]
 name = "CODE CHINA"
-url = "https://codechina.csdn.net/"
-weight = 6
+url = "https://codechina.csdn.net/dev-roadmap"
+weight = 7
 
 [[menu.main]]
 name = "我也要贡献"
-weight = 7
+weight = 6
 hasChildren = true
 
   [[menu.main]]
   parent = "我也要贡献"
   name = "我要补充学习资源"
-  url = ""
+  url = "https://codechina.csdn.net/codechina/developer-roadmap/backend/intro/-/issues"
   weight = 1
 
   [[menu.main]]
   parent = "我也要贡献"
   name = "我要补充领域"
-  url = ""
+  url = "https://codechina.csdn.net/dev-roadmap/dev-roadmap.gitcode.host/-/issues"
   weight = 2
 
   [[menu.main]]
   parent = "我也要贡献"
   name = "我要反馈建议"
-  url = ""
-  weight = 3
\ No newline at end of file
+  url = "https://codechina.csdn.net/codechina/developer-roadmap/backend/intro/-/issues"
+  weight = 3
+
+  [[menu.main]]
+  parent = "我也要贡献"
+  name = "如何参与贡献？"
+  url = "https://codechina.csdn.net/dev-roadmap/dev-roadmap.gitcode.host/-/blob/master/CONTRIBUTING.md"
+  weight = 4
\ No newline at end of file
diff --git a/content/intermediate/6.md b/content/intermediate/6.md
new file mode 100644
index 0000000000000000000000000000000000000000..1b5b8abc4ed91392e9858e8536852474a11e0283
--- /dev/null
+++ b/content/intermediate/6.md
@@ -0,0 +1,18 @@
+---
+title: "相关学习资源"
+date: 2018-12-29
+lastmod: 2020-01-05
+weight: 6
+type: 
+icon: #
+description: "相关学习资源,工程"
+# search related keywords
+---
+
+1.  Brian Goetz等，《Java并发编程实战》
+2. 张卫滨译，《Spring实战》
+3. 何品译，《Netty实战》
+4. 周志明，《深入理解Java虚拟机》
+5.  Neha Narkhede等，《Kafka: The Definitive Guide》
+6. 黄健宏，《Redis设计与实现》
+7. 《计算机程序的构造和解释》
\ No newline at end of file
diff --git a/content/intermediate/_index.md b/content/intermediate/_index.md
index 5f273ce5ccecb4a9f162c1f86ade19a7a18d5f8b..70f279496c443755e5390ec65d2b042b8ca03cc7 100644
--- a/content/intermediate/_index.md
+++ b/content/intermediate/_index.md
@@ -1,5 +1,5 @@
 ---
-title: "后端开发中阶"
+title: "后端技术中阶"
 date: 2018-12-29
 lastmod: 2020-01-05
 weight: 2
@@ -10,7 +10,13 @@ description: "中阶路线图"
 keywords: ["后端开发","中阶"]
 ---
 
-## 中阶路线图
+
+![高校俱乐部](https://codechina.csdn.net/codechina/operation-work/uploads/53b24f5f44d3c851890b1789ed501001/%E9%AB%98%E6%A0%A1%E4%BF%B1%E4%B9%90%E9%83%A8320.jpg)
+
+<p style="text-align:center;font-weight:bold;">关注“高校俱乐部”微信公众号，快人一步获取高清全套技术路线图</p>
+
+<br>
+
 
 {{< embed-pdf-view url="/images/backend.pdf" >}}
 
diff --git a/content/junior/3.md b/content/junior/3.md
new file mode 100644
index 0000000000000000000000000000000000000000..1a981db9a7040cf3406ee37a60889c9217f2d876
--- /dev/null
+++ b/content/junior/3.md
@@ -0,0 +1,22 @@
+---
+title: "相关学习资源"
+date: 2018-12-29
+lastmod: 2020-01-05
+weight: 3
+type: 
+icon: #
+description: "相关学习资源"
+# search related keywords
+---
+
+1. 陈鸣译，《计算机网络：自顶向下方法（原书第6版）》
+2. 龚奕利，贺莲译，《深入理解计算机系统（原书第3版）》
+3. 谢路云译，《算法（第4版）》
+4. 陈昊鹏译，《Java编程思想》
+5. 李道兵等译，《Go程序设计语言》
+6. 《ProgrammmingKotlin》
+7. 刘晓霞等译，《MySQL必知必会》
+8. 《Pro Git》
+9. 许晓斌，《Maven实战》
+10. 李松峰等译，《JavaScript高级程序设计（第3版）》
+11. Cameron Newham等，《学习bash（第二版）》
\ No newline at end of file
diff --git a/content/junior/_index.md b/content/junior/_index.md
index 5ecd85a7ccbdaae371436d85b3b92c11805674a0..529d38d83f08f95e2ca4e54ed45dc04bd8184ac4 100644
--- a/content/junior/_index.md
+++ b/content/junior/_index.md
@@ -1,5 +1,5 @@
 ---
-title: "后端开发初阶"
+title: "后端技术初阶"
 date: 2018-12-29
 lastmod: 2020-01-05
 weight: 1
@@ -10,7 +10,13 @@ description: "初阶路线图"
 keywords: ["后端开发","初阶"]
 ---
 
-## 初阶路线图
+
+![高校俱乐部](https://codechina.csdn.net/codechina/operation-work/uploads/53b24f5f44d3c851890b1789ed501001/%E9%AB%98%E6%A0%A1%E4%BF%B1%E4%B9%90%E9%83%A8320.jpg)
+
+<p style="text-align:center;font-weight:bold;">关注“高校俱乐部”微信公众号，快人一步获取高清全套技术路线图</p>
+
+<br>
+
 
 {{< embed-pdf-view url="/images/backend.pdf" >}}
 
@@ -76,17 +82,3 @@ keywords: ["后端开发","初阶"]
   - VIM 
 - IDE
   - IntelliJ IDEA
-
-## 相关学习资源
-
-1. 陈鸣译，《计算机网络：自顶向下方法（原书第6版）》
-2. 龚奕利，贺莲译，《深入理解计算机系统（原书第3版）》
-3. 谢路云译，《算法（第4版）》
-4. 陈昊鹏译，《Java编程思想》
-5. 李道兵等译，《Go程序设计语言》
-6. 《ProgrammmingKotlin》
-7. 刘晓霞等译，《MySQL必知必会》
-8. 《Pro Git》
-9. 许晓斌，《Maven实战》
-10. 李松峰等译，《JavaScript高级程序设计（第3版）》
-11. Cameron Newham等，《学习bash（第二版）》
\ No newline at end of file
diff --git a/content/senior/4.md b/content/senior/4.md
new file mode 100644
index 0000000000000000000000000000000000000000..ab5b59deed7893c20d264e17289556038aea7902
--- /dev/null
+++ b/content/senior/4.md
@@ -0,0 +1,17 @@
+---
+title: "相关学习资源"
+date: 2018-12-29
+lastmod: 2020-01-05
+weight: 3
+type: 
+icon: #
+description: "相关学习资源"
+# search related keywords
+---
+
+
+1. 赵军平等译，《数据密集型应用系统设计》
+2. Marko Luksa，《Kubernetes in Action》
+3. Distributed systems theory for the distributed systems engineer
+4. 孙宇聪译，《SRE：Google运维解密》
+5. 崔力强等译，《微服务设计》
\ No newline at end of file
diff --git a/content/senior/_index.md b/content/senior/_index.md
index f4e697f0290d9a69fe654f3627956db10e00a204..2fae2c2db8d7f2e14e9e0b28d304f16574484ea8 100644
--- a/content/senior/_index.md
+++ b/content/senior/_index.md
@@ -1,5 +1,5 @@
 ---
-title: "后端开发高阶"
+title: "后端技术高阶"
 date: 2018-12-29
 lastmod: 2020-01-05
 weight: 3
@@ -10,7 +10,13 @@ description: "高阶高线图"
 keywords: ["后端开发","高阶"]
 ---
 
-## 高阶路线图
+
+![高校俱乐部](https://codechina.csdn.net/codechina/operation-work/uploads/53b24f5f44d3c851890b1789ed501001/%E9%AB%98%E6%A0%A1%E4%BF%B1%E4%B9%90%E9%83%A8320.jpg)
+
+<p style="text-align:center;font-weight:bold;">关注“高校俱乐部”微信公众号，快人一步获取高清全套技术路线图</p>
+
+<br>
+
 
 {{< embed-pdf-view url="/images/backend.pdf" >}}
 
@@ -70,11 +76,3 @@ keywords: ["后端开发","高阶"]
   - 负载均衡&健康检查
   - 服务发现&动态路由&健康检查
   - 自动化运维
-
-## 相关学习资源
-
-1. 赵军平等译，《数据密集型应用系统设计》
-2. Marko Luksa，《Kubernetes in Action》
-3. Distributed systems theory for the distributed systems engineer
-4. 孙宇聪译，《SRE：Google运维解密》
-5. 崔力强等译，《微服务设计》
\ No newline at end of file
diff --git a/themes/hugo-theme-pdf-js/static/js/pdf-js/web/viewer.html b/themes/hugo-theme-pdf-js/static/js/pdf-js/web/viewer.html
index 1730b09b752fa1447d001f0134f234ce28eece44..10144caa6915bd2d3fd25910de58c9c9d8ecc878 100644
--- a/themes/hugo-theme-pdf-js/static/js/pdf-js/web/viewer.html
+++ b/themes/hugo-theme-pdf-js/static/js/pdf-js/web/viewer.html
@@ -218,9 +218,9 @@ See https://github.com/adobe-type-tools/cmap-resources
                   <span data-l10n-id="print_label">Print</span>
                 </button>
 
-                <button id="download" class="toolbarButton download hiddenMediumView" title="Download" tabindex="34" data-l10n-id="download">
+                <!-- <button id="download" class="toolbarButton download hiddenMediumView" title="Download" tabindex="34" data-l10n-id="download">
                   <span data-l10n-id="download_label">Download</span>
-                </button>
+                </button> -->
                 <a href="#" id="viewBookmark" class="toolbarButton bookmark hiddenSmallView" title="Current view (copy or open in new window)" tabindex="35" data-l10n-id="bookmark">
                   <span data-l10n-id="bookmark_label">Current View</span>
                 </a>
diff --git a/themes/hugo-theme-pdf-js/static/js/pdf-js/web/viewer.js b/themes/hugo-theme-pdf-js/static/js/pdf-js/web/viewer.js
index 3cf8beed83ec79cf09cf6b970ad6f9bce98a700c..e726d77e48d28aec9441c4cbe669fb1f93f7a5d2 100644
--- a/themes/hugo-theme-pdf-js/static/js/pdf-js/web/viewer.js
+++ b/themes/hugo-theme-pdf-js/static/js/pdf-js/web/viewer.js
@@ -11558,6 +11558,7 @@ class Toolbar {
       element,
       eventName
     } of this.buttons) {
+      if(!element) return;
       element.addEventListener("click", evt => {
         if (eventName !== null) {
           this.eventBus.dispatch(eventName, {