@select_runnable('run_targets')
@file_validator
def html_files(filename):
    return (filename.split('.')[(- 1)] in ['html', 'css', 'js'])
@select_runnable('run_targets')
@file_validator
def html_files(filename):
    return (filename.split('.')[(- 1)] in ['html', 'css', 'js'])