code: def css_html():
      head = ""
  
      def stylesheet(fn):
          return f'<link rel="stylesheet" property="stylesheet" href="{webpath(fn)}">'
  
      for cssfile in scripts.list_files_with_name("style.css"):
          if not os.path.isfile(cssfile):
              continue
  
          head += stylesheet(cssfile)
  
      if os.path.exists(os.path.join(data_path, "user.css")):
          head += stylesheet(os.path.join(data_path, "user.css"))
  
      return head
  
file_path: stable-diffusion-webui/modules/ui_gradio_extensions.py
imports: import os
  import gradio
  from modules import localization, shared, scripts
  from modules.paths import script_path, data_path, cwd
label_desc: Use image node_id 3 for calling a global function with example usage: css_html() and returns: head, str, webpath, str