Do I need to install NPM to use bootstrap

Currently following the youtube tutorial and there are three different installation methods. I use the first method which is compiled CSS and JS but on running the first bit of code which is

<body>
    <div class="container-fluid border">Content</div>
    <script src="js/bootstrap.js"></script>
</body>

</html>

This just displays Content on the webpage but there are no borders

Did you link the bootstrap CSS file within the head element?

Which video are you watching?

Bootstrap CSS Framework Full Course for beginners

Please post the full HTML file content so we can see how you are linking to the Bootstrap CSS.

I do not see a file named css.bootstrap.css in root project folder (where index.html is currently located).

I guess you meant to use css/ and not css.

Okay, I don’t know what you mean by that.

Edit: I now understand what you meant. I meant to reference the CSS folder not a file

Thank you! This worked. My bad, I had a typo.