fix: 解决Windows下可能报错UnicodeDecodeError的问题

UnicodeDecodeError: 'gbk' codec can't decode byte 0xae in position 313

ChuanhuChatbot.py

@@ -50,7 +50,7 @@ else:
 
 gr.Chatbot.postprocess = postprocess
 
-with open("custom.css", "r") as f:
+with open("custom.css", "r", encoding="utf-8") as f:
     customCSS = f.read()
 
 with gr.Blocks(css=customCSS) as demo:

custom.css

@@ -11,18 +11,17 @@
     color: var(--text-color-subdued) !important;
 }
 /* chatbot */
-/* 大于等于500px的设备 */
+/* 屏幕宽度大于等于500px的设备 */
 @media (min-width: 500px) {
     #chuanhu_chatbot {
-      height: calc(100vh - 200px);
+        height: calc(100vh - 200px);
     }
-  }
-
-/* 小于500px的设备 */
+}
+/* 屏幕宽度小于500px的设备 */
 @media (max-width: 499px) {
     #chuanhu_chatbot {
-    height: calc(100vh - 140px);
-}
+        height: calc(100vh - 140px);
+    }
 }
 /* 对话气泡 */
 [class *= "message"] {