Why are styles not being connected when using gulp-connect?

Question

gulp.js

connect.server({
    root: 'demos',
    livereload: true,
    port: 8080
  });

Tried it like that

<link rel="stylesheet" href="../build/css/style.css">

and so
<link rel="stylesheet" href="build/css/style.css">
gives 404

Answer 1

connect.server({
    root: ['demos', 'build/css'],
    livereload: true,
    port: 8080
  });