how to use static file node js

app.use('/static', express.static(path.join(__dirname, 'public')))
app.use(express.static(__dirname + '/public'));
<link rel="stylesheet" type="text/css" href="css/style.css" />
app.use('/static', express.static('public'))
app.use(express.static('public'))
app.use(express.static('files'))