style:

src/views/Conversations/Online/Components/EmailDetailInline.jsx

@@ -303,7 +303,7 @@ const EmailDetailInline = ({ mailID, emailMsg = {}, disabled = false, variant, s
                 )}
                 {mailData.insideAttachments.length > 0 && <details>
                   <summary>
-                    点击展开<span className='text-gray-500 italic'>&nbsp;文内附件 ({mailData.insideAttachments.length}) 已在正文显示 </span>
+                    <span className='text-gray-500 italic'>&nbsp;文内附件 ({mailData.insideAttachments.length}) 已在正文显示&nbsp;</span><span className='cursor-pointer underline'>点击展开</span>
                   </summary>
                   <List
                     dataSource={mailData.insideAttachments || []}