diff --git a/functional.py b/functional.py
index b1f7ae9..56d98fe 100644
--- a/functional.py
+++ b/functional.py
@@ -21,12 +21,20 @@ def get_functionals():
             "Suffix":   r"",
         },
         "查找语法错误": {
-            "Prefix":   r"Below is a paragraph from an academic paper. " +
-                        r"Can you help me ensure that the grammar and the spelling is correct? " +
-                        r"Do not try to polish the text, if no mistake is found, tell me that this paragraph is good." + 
-                        r"If you find grammar or spelling mistakes, please list mistakes you find in a two-column markdown table, " + 
+            "Prefix":   r"Can you help me ensure that the grammar and the spelling is correct? " +
+                        r"Do not try to polish the text, if no mistake is found, tell me that this paragraph is good." +
+                        r"If you find grammar or spelling mistakes, please list mistakes you find in a two-column markdown table, " +
                         r"put the original text the first column, " +
-                        r"put the corrected text in the second column and highlight the key words you fixed." + "\n\n",
+                        r"put the corrected text in the second column and highlight the key words you fixed.""\n"
+                        r"Example:""\n"
+                        r"Paragraph: How is you? Do you knows what is it?""\n"
+                        r"| Original sentence | Corrected sentence |""\n"
+                        r"| :--- | :--- |""\n"
+                        r"| How **is** you? | How **are** you? |""\n"
+                        r"| Do you **knows** what **is** **it**? | Do you **know** what **it** **is** ? |""\n"
+                        r"Below is a paragraph from an academic paper. "
+                        r"You need to report all grammar and spelling mistakes as the example before."
+                        + "\n\n",
             "Suffix":   r"",
             "PreProcess": clear_line_break,    # 预处理：清除换行符
         },
diff --git a/main.py b/main.py
index cdcfaa4..23f848b 100644
--- a/main.py
+++ b/main.py
@@ -36,8 +36,20 @@ gr.Chatbot.postprocess = format_io
 from theme import adjust_theme
 set_theme = adjust_theme()
 
+CSS = """
+.markdown-body table {
+    border: 1px solid #ddd; 
+    border-collapse: collapse;
+}
+
+.markdown-body th, .markdown-body td {
+    border: 1px solid #ddd; 
+    padding: 5px;
+}
+"""
+
 cancel_handles = []
-with gr.Blocks(theme=set_theme, analytics_enabled=False) as demo:
+with gr.Blocks(theme=set_theme, analytics_enabled=False, css=CSS) as demo:
     gr.HTML(title_html)
     with gr.Row().style(equal_height=True):
         with gr.Column(scale=2):
diff --git a/toolbox.py b/toolbox.py
index bf88760..6c48cbb 100644
--- a/toolbox.py
+++ b/toolbox.py
@@ -157,11 +157,12 @@ def markdown_convertion(txt):
     """
         将Markdown格式的文本转换为HTML格式。如果包含数学公式，则先将公式转换为HTML格式。
     """
+    pre = '<div class="markdown-body">'
+    suf = '</div>'
     if ('$' in txt) and ('```' not in txt):
-        return markdown.markdown(txt,extensions=['fenced_code','tables']) + '<br><br>' + \
-            markdown.markdown(convert_math(txt, splitParagraphs=False),extensions=['fenced_code','tables'])
+        return pre + markdown.markdown(txt,extensions=['fenced_code','tables']) + '<br><br>' + markdown.markdown(convert_math(txt, splitParagraphs=False),extensions=['fenced_code','tables']) + suf
     else:
-        return markdown.markdown(txt,extensions=['fenced_code','tables'])
+        return pre + markdown.markdown(txt,extensions=['fenced_code','tables']) + suf
 
 
 def format_io(self, y):