fix: ai chat error classname

Author: kkkky123

docs_roll/src/css/custom.css

@@ -15,10 +15,6 @@
   --ifm-color-primary-lightest: #3cad6e;
   --ifm-code-font-size: 95%;
   --docusaurus-highlighted-code-line-bg: rgba(0, 0, 0, 0.1);
-  .ant-float-btn-icon {
-    width: 24px !important;
-    height: 24px !important; 
-  }
 }
 
 /* For readability concerns, you should choose a lighter palette in dark mode. */
@@ -32,3 +28,8 @@
   --ifm-color-primary-lightest: #4fddbf;
   --docusaurus-highlighted-code-line-bg: rgba(0, 0, 0, 0.3);
 }
+
+.ant-float-btn-icon {
+  width: 24px !important;
+  height: 24px !important; 
+}