diff --git a/src/epub_converter/css_processor.py b/src/epub_converter/css_processor.py
index fbb2f99..2be0dab 100644
--- a/src/epub_converter/css_processor.py
+++ b/src/epub_converter/css_processor.py
@@ -37,6 +37,7 @@ class CSSPreprocessor:
             "margin-left": self.convert_indents_tag_values,
             "margin-top": self.convert_tag_style_values,
             "margin": self.convert_indents_tag_values,
+            "width": self.convert_tag_style_values,
         }
 
     @staticmethod
@@ -104,16 +105,23 @@ class CSSPreprocessor:
         return size_value
 
     @staticmethod
-    def style_conditions(style_value, style_name):
+    def clean_value(style_value: str, style_name: str):
         cleaned_value = style_value.replace("\"", "")
-        # cleaned_value = style_value.replace("+", "%2B")
+        if style_name == 'font-family':
+            for symbol in ["+", "*", ".", "%", "?", "$", "^", "[", "]"]:
+                cleaned_value = re.sub(
+                    re.escape(f"{symbol}"), rf"\\{symbol}", cleaned_value)
+        return cleaned_value
+
+    @staticmethod
+    def style_conditions(style_value: str, style_name: str) -> tuple[bool, bool]:
         constraints_on_value = LiveCartaConfig.LIVECARTA_STYLE_ATTRS.get(
             style_name)
-        value_not_in_possible_values_list = cleaned_value not in LiveCartaConfig.LIVECARTA_STYLE_ATTRS[
+        value_not_in_possible_values_list = style_value not in LiveCartaConfig.LIVECARTA_STYLE_ATTRS[
             style_name]
-        return cleaned_value, constraints_on_value, value_not_in_possible_values_list
+        return constraints_on_value, value_not_in_possible_values_list
 
-    def update_inline_styles_to_livecarta_convention(self, split_style: list):
+    def update_inline_styles_to_livecarta_convention(self, split_style: list) -> list:
         for i, style in enumerate(split_style):
             style_name, style_value = style.split(":")
             if style_name not in LiveCartaConfig.LIVECARTA_STYLE_ATTRS:
@@ -121,9 +129,8 @@ class CSSPreprocessor:
                 split_style[i] = ""
                 return split_style
 
-            cleaned_value, constraints_on_value, value_not_in_possible_values_list =\
-                self.style_conditions(style_value, style_name)
-            if constraints_on_value and value_not_in_possible_values_list:
+            cleaned_value = self.clean_value(style_value, style_name)
+            if all(self.style_conditions(cleaned_value, style_name)):
                 # there are constraints + value not in LIVECARTA_STYLE_ATTRS, remove from css file
                 split_style[i] = ""
             else:
@@ -138,18 +145,18 @@ class CSSPreprocessor:
         """Build inline style with LiveCarta convention"""
         # replace all spaces between "; & letter" to ";"
         style = re.sub(r"; *", ";", style)
-        # when we split style by ";", last element of the list is "" - None
-        # remove it
+        # when we split style by ";", last element of the list is "" - None (we remove it)
         split_style: list = list(filter(None, style.split(";")))
         # replace all spaces between ": & letter" to ":"
         split_style = [el.replace(
             re.search(r"(:\s*)", el).group(1), ":") for el in split_style]
 
-        split_style = self.update_inline_styles_to_livecarta_convention(split_style)
+        split_style = self.update_inline_styles_to_livecarta_convention(
+            split_style)
         style = "; ".join(split_style)
         return style
 
-    def process_inline_styles_in_html_soup(self, html_href2html_body_soup):
+    def process_inline_styles_in_html_soup(self, html_href2html_body_soup: dict):
         """This function is designed to convert inline html styles"""
         for html_href in html_href2html_body_soup:
             html_content: BeautifulSoup = html_href2html_body_soup[html_href]
@@ -185,16 +192,14 @@ class CSSPreprocessor:
             css_rule.style[style_type.name] = ""
             return
 
-        cleaned_value, constraints_on_value, value_not_in_possible_values_list =\
-            self.style_conditions(style_type.value, style_type.name)
-        if constraints_on_value and value_not_in_possible_values_list:
+        cleaned_value = self.clean_value(style_type.value, style_type.name)
+        if all(self.style_conditions(cleaned_value, style_type.name)):
             # there are constraints + value not in LIVECARTA_STYLE_ATTRS, remove from css file
             css_rule.style[style_type.name] = ""
         else:
             if style_type.name in self.LIVECARTA_STYLE_ATTRS_MAPPING:
                 # function that converts our data
                 func = self.LIVECARTA_STYLE_ATTRS_MAPPING[style_type.name]
-                print(cleaned_value)
                 css_rule.style[style_type.name] = func(cleaned_value)
 
     def build_css_file_content(self, css_content: str) -> str:
diff --git a/src/epub_converter/epub_converter.py b/src/epub_converter/epub_converter.py
index f779f98..7e8ab8a 100644
--- a/src/epub_converter/epub_converter.py
+++ b/src/epub_converter/epub_converter.py
@@ -305,7 +305,7 @@ class EpubConverter:
             self.adjacency_list[-1].append(nav_point)
             self.hrefs_added_to_toc.add(nav_point.href)
 
-    def add_not_added_files_to_adjacency_list(self, not_added):
+    def add_not_added_files_to_adjacency_list(self, not_added: list):
         """Function add files that not added to adjacency list"""
         for i, file in enumerate(not_added):
             nav_point = NavPoint(
diff --git a/src/epub_converter/html_epub_processor.py b/src/epub_converter/html_epub_processor.py
index 7a6e476..aba8811 100644
--- a/src/epub_converter/html_epub_processor.py
+++ b/src/epub_converter/html_epub_processor.py
@@ -66,7 +66,7 @@ class HtmlEpubPreprocessor:
         return title
 
     @staticmethod
-    def _remove_comments(chapter_tag):
+    def _remove_comments(chapter_tag: BeautifulSoup):
         """
         Function remove comments
         Parameters
@@ -85,7 +85,7 @@ class HtmlEpubPreprocessor:
                 element.extract()
 
     @staticmethod
-    def _wrap_strings_with_p(chapter_tag):
+    def _wrap_strings_with_p(chapter_tag: BeautifulSoup):
         """
         Function converts headings that aren't supported by LiveCarta with <p>
         Parameters
@@ -108,7 +108,7 @@ class HtmlEpubPreprocessor:
                     p_tag.append(str(node))
                     node.replace_with(p_tag)
 
-    def _wrap_tags_with_table(self, chapter_tag, rules: list):
+    def _wrap_tags_with_table(self, chapter_tag: BeautifulSoup, rules: list):
         """
         Function wraps <tag> with <table>
         Parameters
@@ -153,7 +153,7 @@ class HtmlEpubPreprocessor:
                     process_tag_using_table()
 
     @staticmethod
-    def _tags_to_correspond_livecarta_tag(chapter_tag, rules: list):
+    def _tags_to_correspond_livecarta_tag(chapter_tag: BeautifulSoup, rules: list):
         """
         Function to replace all tags to correspond LiveCarta tags
         Parameters
@@ -190,7 +190,7 @@ class HtmlEpubPreprocessor:
                     # todo can cause appearance of \n <p><p>...</p></p> -> <p>\n</p> <p>...</p> <p>\n</p> (section)
                     tag.name = tag_to_replace
 
-    def _unwrap_tags(self, chapter_tag, rules: dict):
+    def _unwrap_tags(self, chapter_tag: BeautifulSoup, rules: dict):
         """
         Function unwrap tags and moves id to span
         Parameters
@@ -213,7 +213,7 @@ class HtmlEpubPreprocessor:
                 tag.unwrap()
 
     @staticmethod
-    def _insert_tags_into_correspond_tags(chapter_tag, rules: list):
+    def _insert_tags_into_correspond_tags(chapter_tag: BeautifulSoup, rules: list):
         """
         Function inserts tags into correspond tags
         Parameters
@@ -257,14 +257,14 @@ class HtmlEpubPreprocessor:
                 for tag in chapter_tag.find_all([re.compile(tag) for tag in tags]):
                     insert(tag)
 
-    def _remove_headings_content(self, content_tag, title_of_chapter: str):
+    def _remove_headings_content(self, chapter_tag, title_of_chapter: str):
         """
         Function
         - cleans/removes headings from chapter in order to avoid duplication of chapter titles in the content
         - adds span with id in order to
         Parameters
         ----------
-        content_tag: soup object
+        chapter_tag: soup object
             Tag of the page
         title_of_chapter: str
             Chapter title
@@ -276,15 +276,15 @@ class HtmlEpubPreprocessor:
 
         """
         title_of_chapter = title_of_chapter.lower()
-        for tag in content_tag.contents:
+        for tag in chapter_tag.contents:
             text = tag if isinstance(tag, NavigableString) else tag.text
             if re.sub(r"[\s\xa0]", "", text):
                 text = re.sub(r"[\s\xa0]", " ", text).lower()
                 text = text.strip()  # delete extra spaces
                 if title_of_chapter == text or \
                         (title_of_chapter in text and
-                         re.findall(r"^h[1-3]$", tag.name or content_tag.name)):
-                    self._add_span_to_save_ids_for_links(tag, content_tag)
+                         re.findall(r"^h[1-3]$", tag.name or chapter_tag.name)):
+                    self._add_span_to_save_ids_for_links(tag, chapter_tag)
                     tag.extract()
                     return
                 elif not isinstance(tag, NavigableString):
@@ -329,7 +329,7 @@ class HtmlEpubPreprocessor:
                 table.attrs["border"] = "1"
 
     @staticmethod
-    def _class_removing(chapter_tag):
+    def _class_removing(chapter_tag: BeautifulSoup):
         """
         Function removes classes that aren't created by converter
         Parameters