diff --git a/src/epub_converter/html_epub_preprocessor.py b/src/epub_converter/html_epub_preprocessor.py
index fbc45a2..042b7b0 100644
--- a/src/epub_converter/html_epub_preprocessor.py
+++ b/src/epub_converter/html_epub_preprocessor.py
@@ -142,12 +142,25 @@ def _wrap_tags_with_table(chapter_tag):
 
 def _tags_to_correspond_livecarta_tag(chapter_tag):
     """Function to replace all tags to correspond livecarta tags"""
-    for reg_key, to_replace_value in LiveCartaConfig.REPLACE_REGEX_WITH_LIVECARTA_CORRESPOND_TAGS.items():
-        for key in reg_key:
-            tags = chapter_tag.find_all(re.compile(key))
-            for tag in tags:
-                # todo can cause appearance of \n <p><p>...</p></p> -> <p>\n</p> <p>...</p> <p>\n</p> (section)
-                tag.name = to_replace_value
+    for reg_keys, to_replace_value in LiveCartaConfig.REPLACE_TAG_WITH_LIVECARTA_CORRESPOND_TAGS.items():
+        for key in reg_keys:
+            if isinstance(key, tuple):
+                replace = key[0]
+                parent, child = key[1], key[2]
+                for parent_tag in chapter_tag.select(parent):
+                    if replace == "parent":
+                        parent_tag.name = to_replace_value
+                    elif replace == "child":
+                        for child_tag in parent_tag.select(child):
+                            child_tag.name = to_replace_value
+                            if not child_tag.attrs.get("style"):
+                                child_tag.attrs["style"] =\
+                                    "font-size: 14px; font-family: courier new,courier,monospace;"
+            else:             
+                tags = chapter_tag.find_all(re.compile(key))
+                for tag in tags:
+                    # todo can cause appearance of \n <p><p>...</p></p> -> <p>\n</p> <p>...</p> <p>\n</p> (section)
+                    tag.name = to_replace_value
 
 
 def _unwrap_tags(chapter_tag):