Can't get stylesheet to work with ejs for node.js

Declare a static directory:

app.use(express.static(__dirname + '/public'));

<link rel='stylesheet' href='/style.css' />

in app.js:

 you must first declare static directory 

app.use("/styles",express.static(__dirname + "/styles"));

in ejs file :

<link rel='stylesheet' href='/styles/style.css' />