@staticmethod<EOL><INDENT>def jcrop_css(css_url=None):<DEDENT>
if css_url is None:<EOL><INDENT>if current_app.config['<STR_LIT>']:<EOL><INDENT>css_url = url_for('<STR_LIT>', filename='<STR_LIT>')<EOL><DEDENT>else:<EOL><INDENT>css_url = '<STR_LIT>'<EOL><DEDENT><DEDENT>return Markup('<STR_LIT>' % css_url)<EOL>
Load jcrop css file.

        :param css_url: The custom CSS URL.