code: def format_table_styles(styles: CSSStyles) -> CSSStyles:
      """
      looks for multiple CSS selectors and separates them:
      [{'selector': 'td, th', 'props': 'a:v;'}]
          ---> [{'selector': 'td', 'props': 'a:v;'},
                {'selector': 'th', 'props': 'a:v;'}]
      """
      return [
          {"selector": selector, "props": css_dict["props"]}
          for css_dict in styles
          for selector in css_dict["selector"].split(",")
      ]
  
imports: from __future__ import annotations
  from collections import defaultdict
  from functools import partial
  import re
  from typing import Any, Callable, DefaultDict, Dict, List, Optional, Sequence, Tuple, TypedDict, Union
  from uuid import uuid4
  import numpy
  from pandas._config import get_option
  from pandas._libs import lib
  from pandas._typing import Axis, Level
  from pandas.compat._optional import import_optional_dependency
  from pandas.core.dtypes.common import is_complex, is_float, is_integer
  from pandas.core.dtypes.generic import ABCSeries
  from pandas import DataFrame, Index, IndexSlice, MultiIndex, Series, isna
  from pandas.api.types import is_list_like
  import pandas.core.common
  from markupsafe import escape
label_desc: Use image node_id 5 for calling a global function with example usage: format_table_styles(styles) and returns: unknown