Add ability to get file from import in css

src/epub_converter/css_reader.py

@@ -165,7 +165,7 @@ LIVECARTA_STYLE_ATTRS_SHOULD_BE_TAG = {
 }
 
 
-def check_style_to_be_tag(style) -> List[tuple]:
+def check_style_to_be_tag(style: str) -> List[tuple]:
     """
     Function searches style properties that can be converted to tags.
     It searches for them and prepare list of properties to be removed from style string
@@ -511,6 +511,8 @@ def convert_html_soup_with_css_style(html_soup: BeautifulSoup, css_text: str) ->
     tags_with_possible_style_attr = html_soup.find_all(
         could_have_style_in_livecarta_regexp)
     for i, x in enumerate(tags_with_possible_style_attr):
+        if i == 2:
+            pass
         x.attrs['livecarta_id'] = i
         livecarta_tmp_ids.append(i)
 

src/epub_converter/epub_converter.py

@@ -121,6 +121,9 @@ class EpubConverter:
         path_to_css_from_root = normpath(
             join(html_folder, path_to_css_from_html)).replace('\\', '/')
         css_obj = self.ebooklib_book.get_item_with_href(path_to_css_from_root)
+        if "@import" in str(css_obj.content):
+            path_to_css_from_root = "css/" + re.search('"(.*)"', str(css_obj.content)).group(1)
+            css_obj = self.ebooklib_book.get_item_with_href(path_to_css_from_root)
         assert css_obj, f'Css style {css_href} was not in manifest.'
         css_content: str = css_obj.get_content().decode()
         return css_content