code: def css_files(self):
          ''' The CSS files in the BokehJS directory.
  
          '''
          bokehjsdir = self.bokehjsdir()
          js_files = []
          for root, dirnames, files in os.walk(bokehjsdir):
              for fname in files:
                  if fname.endswith(".css"):
                      js_files.append(join(root, fname))
          return js_filef css_files(self):
          ''' The CSS files in the BokehJS directory.
  
          '''
          bokehjsdir = self.bokehjsdir()
          js_files = []
          for root, dirnames, files in os.walk(bokehjsdir):
              for fname in files:
                  if fname.endswith(".css"):
                      js_files.append(join(root, fname))
          return js_files
docs: The CSS files in the BokehJS directory.