diff --git a/web/app/components/base/chat/embedded-chatbot/header/index.tsx b/web/app/components/base/chat/embedded-chatbot/header/index.tsx
index 95975e29e7..904506f2bc 100644
--- a/web/app/components/base/chat/embedded-chatbot/header/index.tsx
+++ b/web/app/components/base/chat/embedded-chatbot/header/index.tsx
@@ -135,7 +135,7 @@ const Header: FC<IHeaderProps> = ({
   return (
     <div
       className={cn('flex h-14 shrink-0 items-center justify-between rounded-t-2xl px-3')}
-      style={Object.assign({}, CssTransform(theme?.backgroundHeaderColorStyle ?? ''), CssTransform(theme?.headerBorderBottomStyle ?? ''))}
+      style={CssTransform(theme?.headerBorderBottomStyle ?? '')}
     >
       <div className="flex grow items-center space-x-3">
         {customerIcon}
diff --git a/web/app/components/base/chat/embedded-chatbot/index.tsx b/web/app/components/base/chat/embedded-chatbot/index.tsx
index df188e35d4..1553d1f153 100644
--- a/web/app/components/base/chat/embedded-chatbot/index.tsx
+++ b/web/app/components/base/chat/embedded-chatbot/index.tsx
@@ -49,8 +49,8 @@ const Chatbot = () => {
     <div className='relative'>
       <div
         className={cn(
-          'flex flex-col rounded-2xl border border-components-panel-border-subtle',
-          isMobile ? 'h-[calc(100vh_-_60px)] border-[0.5px] border-components-panel-border shadow-xs' : 'h-[100vh] bg-chatbot-bg',
+          'flex flex-col rounded-2xl',
+          isMobile ? 'h-[calc(100vh_-_60px)] shadow-xs' : 'h-[100vh] bg-chatbot-bg',
         )}
         style={isMobile ? Object.assign({}, CssTransform(themeBuilder?.theme?.backgroundHeaderColorStyle ?? '')) : {}}
       >
@@ -62,7 +62,7 @@ const Chatbot = () => {
           theme={themeBuilder?.theme}
           onCreateNewChat={handleNewConversation}
         />
-        <div className={cn('flex grow flex-col overflow-y-auto', isMobile && '!h-[calc(100vh_-_3rem)] rounded-2xl bg-chatbot-bg')}>
+        <div className={cn('flex grow flex-col overflow-y-auto', isMobile && 'm-[0.5px] !h-[calc(100vh_-_3rem)] rounded-2xl bg-chatbot-bg')}>
           {appChatListDataLoading && (
             <Loading type='app' />
           )}