How do you use bootstrap in notepad++?

How do you use bootstrap in notepad++? The link in the bootstrap section of the course doesn’t seem to be working.

You can use the file from a CDN (say, from BootstrapCDN). Your <link> would look something like

<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css">

I tested the link by trying to replicate the second challenge of the chapter (“Make Images Mobile Responsive”) which involves making a picture with cats fit the width of the page. It didn’t work. Either the link didn’t work or I did something wrong.

Here’s my code:

<!Doctype html>
  <html>

	  <title>
		Generic Website Template
	  </title>

	  <head>
		<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css">
	  </head>

	  <body>
		<div id = "Header">
			<img class = "img-responsive" src = "https://bit.ly/fcc-running-cats"/>
		</div>

		<div id = "Taskbar">
		</div>

		<div id = "Left">
		</div>

		<div id = "Right">
		</div>

		<div id = "Footer">
		</div>
	  </body>
</html>

Run this in notepad++ and see the result. What have I done wrong?