diff --git a/assets/customize.scss b/assets/customize.scss
index f34e0b0e..9b3d240a 100644
--- a/assets/customize.scss
+++ b/assets/customize.scss
@@ -121,3 +121,20 @@ span.shadow-text {
   }
 }
 
+.inline-img {
+  display: inline-block !important;
+  height: 4em;
+  vertical-align: middle;
+  border: none !important;
+}
+.trans-flag {
+    display: inline-block;
+    height: 1em;
+    width: 1em;
+    margin: 0 0.05em 0 0.1em;
+    vertical-align: -0.1em;
+    background-repeat: no-repeat;
+    background-position: center center;
+    background-size: 1em 1em;
+    background-image: url('/images/trans-flag.svg');
+}
diff --git a/content/zh-cn/docs/friendship/index.md b/content/zh-cn/docs/friendship/index.md
index 483c2657..024b1ca9 100644
--- a/content/zh-cn/docs/friendship/index.md
+++ b/content/zh-cn/docs/friendship/index.md
@@ -3,8 +3,6 @@ title: 友情合作
 weight: 10
 ---
 
-<link rel="stylesheet" href="main.css">
-
 ### QQ 交流群 {#qq-group}
 
 - <img src="trans-arch.png" class="inline-img">**Arch 木桶饭** [{{< shields/qq 782820926 >}}](https://jq.qq.com/?_wv=1027&k=aVZipzyj)
diff --git a/content/zh-cn/docs/friendship/main.css b/content/zh-cn/docs/friendship/main.css
deleted file mode 100644
index 50b83e41..00000000
--- a/content/zh-cn/docs/friendship/main.css
+++ /dev/null
@@ -1,17 +0,0 @@
-.inline-img {
-  display: inline-block !important;
-  height: 4em;
-  vertical-align: middle;
-  border: none !important;
-}
-.trans-flag {
-    display: inline-block;
-    height: 1em;
-    width: 1em;
-    margin: 0 0.05em 0 0.1em;
-    vertical-align: -0.1em;
-    background-repeat: no-repeat;
-    background-position: center center;
-    background-size: 1em 1em;
-    background-image: url('/images/trans-flag.svg');
-}
diff --git a/content/zh-hant/docs/friendship/index.md b/content/zh-hant/docs/friendship/index.md
index bb17ea25..ad3bcd13 100644
--- a/content/zh-hant/docs/friendship/index.md
+++ b/content/zh-hant/docs/friendship/index.md
@@ -3,8 +3,6 @@ title: 友情合作
 weight: 10
 ---
 
-<link rel="stylesheet" href="main.css">
-
 ### Telegram 交流群 {#tg-group}
 
 - 逆光小鎮  聯繫 {{< shields/telegram rikablossom >}} 加入
diff --git a/content/zh-hant/docs/friendship/main.css b/content/zh-hant/docs/friendship/main.css
deleted file mode 100644
index 50b83e41..00000000
--- a/content/zh-hant/docs/friendship/main.css
+++ /dev/null
@@ -1,17 +0,0 @@
-.inline-img {
-  display: inline-block !important;
-  height: 4em;
-  vertical-align: middle;
-  border: none !important;
-}
-.trans-flag {
-    display: inline-block;
-    height: 1em;
-    width: 1em;
-    margin: 0 0.05em 0 0.1em;
-    vertical-align: -0.1em;
-    background-repeat: no-repeat;
-    background-position: center center;
-    background-size: 1em 1em;
-    background-image: url('/images/trans-flag.svg');
-}