diff --git a/_coverpage.md b/_coverpage.md
index d35c2f017c9c1eb075723024bd525baea1451357..f56ad978d747b423e74a89b0fe9884b78a84d450 100644
--- a/_coverpage.md
+++ b/_coverpage.md
@@ -1,9 +1,7 @@
-# RT-Thread 文档中心 <small>内测版</small>
+# RT-Thread 文档中心
 
 ![logo](_media/icon.png)
 
-> Document Center
-
 [新手指导](/other/novice-guide/README.md)
 [标准版本](/rt-thread-version/rt-thread-standard/README.md)
 [Nano版本](/rt-thread-version/rt-thread-nano/an0038-nano-introduction.md)
diff --git a/_styles/vue.css b/_styles/vue.css
index 80e62ef132592ac438e3279796da70f6e9957093..0f9f4b9b0cfd081fa55bcc5a7edfb85fa15a553f 100644
--- a/_styles/vue.css
+++ b/_styles/vue.css
@@ -410,67 +410,8 @@ body.close .content {
     display: none;
   }
 }
-@media screen and (max-width: 768px) {
-  .github-corner,
-  .sidebar-toggle,
-  .sidebar {
-    position: fixed;
-  }
-  .app-nav {
-    margin-top: 16px;
-  }
-  .app-nav li ul {
-    top: 30px;
-  }
-  main {
-    height: auto;
-    overflow-x: hidden;
-  }
-  .sidebar {
-    left: -300px;
-    transition: transform 250ms ease-out;
-  }
-  .content {
-    left: 0;
-    max-width: 100vw;
-    position: static;
-    padding-top: 20px;
-    transition: transform 250ms ease;
-  }
-  .app-nav,
-  .github-corner {
-    transition: transform 250ms ease-out;
-  }
-  .sidebar-toggle {
-    background-color: transparent;
-    width: auto;
-    padding: 30px 30px 10px 10px;
-  }
-  body.close .sidebar {
-    transform: translateX(300px);
-  }
-  body.close .sidebar-toggle {
-    background-color: rgba(255,255,255,0.8);
-    transition: 1s background-color;
-    width: 284px;
-    padding: 10px;
-  }
-  body.close .content {
-    transform: translateX(300px);
-  }
-  body.close .app-nav,
-  body.close .github-corner {
-    display: none;
-  }
-  .github-corner:hover .octo-arm {
-    -webkit-animation: none;
-            animation: none;
-  }
-  .github-corner .octo-arm {
-    -webkit-animation: octocat-wave 560ms ease-in-out;
-            animation: octocat-wave 560ms ease-in-out;
-  }
-}
+
+
 @-webkit-keyframes octocat-wave {
   0%, 100% {
     transform: rotate(0);
@@ -870,3 +811,84 @@ pre::after {
 .docsify-tabs--classic .docsify-tabs__tab~.docsify-tabs__tab{
   background:#fff;
 }
+@media screen and (max-width: 768px) {
+  .github-corner,
+  .sidebar-toggle,
+  .sidebar {
+    position: fixed;
+  }
+  .app-nav {
+    margin-top: 16px;
+  }
+  .app-nav li ul {
+    top: 30px;
+  }
+  main {
+    height: auto;
+    overflow-x: hidden;
+  }
+  .sidebar {
+    left: -300px;
+    transition: transform 250ms ease-out;
+  }
+  .content {
+    left: 0;
+    max-width: 100vw;
+    position: static;
+    padding-top: 20px;
+    transition: transform 250ms ease;
+  }
+  .app-nav,
+  .github-corner {
+    transition: transform 250ms ease-out;
+  }
+  .sidebar-toggle {
+    background-color: transparent;
+    width: auto;
+    padding: 30px 30px 10px 10px;
+  }
+  body.close .sidebar {
+    transform: translateX(300px);
+  }
+  body.close .sidebar-toggle {
+    background-color: rgba(255,255,255,0.8);
+    transition: 1s background-color;
+    width: 284px;
+    padding: 10px;
+  }
+  body.close .content {
+    transform: translateX(300px);
+  }
+  body.close .app-nav,
+  body.close .github-corner {
+    display: none;
+  }
+  .github-corner:hover .octo-arm {
+    -webkit-animation: none;
+            animation: none;
+  }
+  .github-corner .octo-arm {
+    -webkit-animation: octocat-wave 560ms ease-in-out;
+            animation: octocat-wave 560ms ease-in-out;
+  }
+  
+}
+
+@media screen and (max-width: 500px){
+  .cover .cover-main h1{
+    margin: 0.625rem 0 1rem
+  }
+  .cover .cover-main h1 span{
+    font-size: 26px;
+  }
+  .cover blockquote {
+    display: none;
+  }
+  .cover .cover-main img{
+    width: 80px;
+  }
+  section.cover .cover-main > p:last-child a {
+    width: 200px;
+    padding: 0.5em 2rem;
+  }
+}
\ No newline at end of file