diff --git a/src/config/index.js b/src/config/index.js
index 2416b53..328f816 100644
--- a/src/config/index.js
+++ b/src/config/index.js
@@ -13,7 +13,7 @@ let host = location.origin + '/'
 let bankPath = `${location.origin}/banksystem` // 银行系统
 // 121.37.12.51 | 192.168.31.151
 if (isDev) {
-  host = 'http://192.168.31.51:9000/'
+  host = 'http://192.168.31.217:9000/'
   // host = 'http://121.37.12.51:9000/'
   // host = 'https://occupationlab.com/'
   bankPath = `http://${location.hostname}:8093`
diff --git a/src/styles/common.scss b/src/styles/common.scss
index 34185af..fd65a8c 100644
--- a/src/styles/common.scss
+++ b/src/styles/common.scss
@@ -103,3 +103,21 @@ body .cus-table.el-table {
 .code-load {
   bottom: 50px !important;
 }
+
+.markdown-body {
+  ul {
+    list-style: disc;
+
+    li {
+      list-style: inherit;
+    }
+  }
+
+  ol {
+    list-style: decimal;
+
+    li {
+      list-style: inherit;
+    }
+  }
+}
\ No newline at end of file
diff --git a/src/views/Home.vue b/src/views/Home.vue
index 6f390a6..005296c 100644
--- a/src/views/Home.vue
+++ b/src/views/Home.vue
@@ -95,6 +95,17 @@ export default {
     testPanel
   },
   mounted () {
+    // 保证同一个浏览器只有一个当前系统能打开
+    if (!document.referrer) {
+      this.notAllowed = 1
+      this.$alert('我们注意到您当前已尝试打开多个实验页面。为保证实验的公平性和诚信，系统仅允许单个实验页面处于活跃状态。', '提示', {
+        confirmButtonText: '退出当前页面',
+        showClose: false,
+        callback: action => {
+          this.back()
+        }
+      })
+    }
 
     document.onkeydown = function (event) {
       var e = event || window.event || arguments.callee.caller.arguments[0];