diff --git a/README.md b/README.md
index 0fbe916..ad5768c 100644
--- a/README.md
+++ b/README.md
@@ -43,6 +43,7 @@ The bilingual_book_maker is an AI translation tool that uses ChatGPT to assist u
 - `--accumulated_num` Wait for how many tokens have been accumulated before starting the translation. gpt3.5 limits the total_token to 4090. For example, if you use --accumulated_num 1600, maybe openai will
 output 2200 tokens and maybe 200 tokens for other messages in the system messages user messages, 1600+2200+200=4000, So you are close to reaching the limit. You have to choose your own
 value, there is no way to know if the limit is reached before sending
+- `--translation_style` example: `--translation_style "color: #808080; font-style: italic;"`
 
 ### Examples
 
diff --git a/book_maker/cli.py b/book_maker/cli.py
index 91f8ea7..e18db79 100644
--- a/book_maker/cli.py
+++ b/book_maker/cli.py
@@ -182,6 +182,12 @@ and maybe 200 tokens for other messages in the system messages user messages, 16
 So you are close to reaching the limit. You have to choose your own value, there is no way to know if the limit is reached before sending
 """,
     )
+    parser.add_argument(
+        "--translation_style",
+        dest="translation_style",
+        type=str,
+        help="""ex: --translation_style "color: #808080; font-style: italic;" """,
+    )
     parser.add_argument(
         "--batch_size",
         dest="batch_size",
@@ -273,6 +279,8 @@ So you are close to reaching the limit. You have to choose your own value, there
         e.translate_tags = options.translate_tags
     if options.accumulated_num > 1:
         e.accumulated_num = options.accumulated_num
+    if options.translation_style:
+        e.translation_style = options.translation_style
     if options.batch_size:
         e.batch_size = options.batch_size
     e.make_bilingual_book()
diff --git a/book_maker/loader/epub_loader.py b/book_maker/loader/epub_loader.py
index 1d910fa..7b7e6ee 100644
--- a/book_maker/loader/epub_loader.py
+++ b/book_maker/loader/epub_loader.py
@@ -43,7 +43,10 @@ class EPUBBookLoader(BaseBookLoader):
         self.translate_tags = "p"
         self.allow_navigable_strings = False
         self.accumulated_num = 1
-        self.helper = EPUBBookLoaderHelper(self.translate_model, self.accumulated_num)
+        self.translation_style = ""
+        self.helper = EPUBBookLoaderHelper(
+            self.translate_model, self.accumulated_num, self.translation_style
+        )
 
         # monkey pathch for # 173
         def _write_items_patch(obj):
@@ -120,7 +123,7 @@ class EPUBBookLoader(BaseBookLoader):
                 new_p.string = self.translate_model.translate(p.text)
                 self.p_to_save.append(new_p.text)
 
-        p.insert_after(new_p)
+        self.helper.insert_trans(p, new_p.string, self.translation_style)
         index += 1
 
         if index % 20 == 0:
@@ -166,6 +169,9 @@ class EPUBBookLoader(BaseBookLoader):
                 count = length
 
     def make_bilingual_book(self):
+        self.helper = EPUBBookLoaderHelper(
+            self.translate_model, self.accumulated_num, self.translation_style
+        )
         new_book = self._make_new_book(self.origin_book)
         all_items = list(self.origin_book.get_items())
         trans_taglist = self.translate_tags.split(",")
@@ -269,7 +275,9 @@ class EPUBBookLoader(BaseBookLoader):
                                 new_p = self.p_to_save[index]
                             else:
                                 new_p.string = self.p_to_save[index]
-                            p.insert_after(new_p)
+                            self.helper.insert_trans(
+                                p, new_p.string, self.translation_style
+                            )
                             index += 1
                         else:
                             break
diff --git a/book_maker/loader/helper.py b/book_maker/loader/helper.py
index 34de65c..d5e0faf 100644
--- a/book_maker/loader/helper.py
+++ b/book_maker/loader/helper.py
@@ -3,15 +3,25 @@ from copy import copy
 
 
 class EPUBBookLoaderHelper:
-    def __init__(self, translate_model, accumulated_num):
+    def __init__(self, translate_model, accumulated_num, translation_style):
         self.translate_model = translate_model
         self.accumulated_num = accumulated_num
+        self.translation_style = translation_style
+
+    def insert_trans(self, p, text, translation_style=""):
+        if p.string is not None and p.string.strip() == text.strip():
+            return
+        new_p = copy(p)
+        new_p.string = text
+        if translation_style != "":
+            new_p["style"] = translation_style
+        p.insert_after(new_p)
 
     def deal_new(self, p, wait_p_list):
         self.deal_old(wait_p_list)
-        new_p = copy(p)
-        new_p.string = self.translate_model.translate(p.text)
-        p.insert_after(new_p)
+        self.insert_trans(
+            p, self.translate_model.translate(p.text), self.translation_style
+        )
 
     def deal_old(self, wait_p_list):
         if not wait_p_list:
@@ -22,9 +32,7 @@ class EPUBBookLoaderHelper:
         for i in range(len(wait_p_list)):
             if i < len(result_txt_list):
                 p = wait_p_list[i]
-                new_p = copy(p)
-                new_p.string = result_txt_list[i]
-                p.insert_after(new_p)
+                self.insert_trans(p, result_txt_list[i], self.translation_style)
 
         wait_p_list.clear()