I have a folder of HTML and CSS documents as well as many images that my HTML documents reference. Can I upload the folder somewhere online?

So my HTML files link to my CSS files by <link type="text/css" rel="stylesheet" href="stylesheet.css" /> so if the HTML file is not in the same folder as stylesheet.css, there will be no link.

Similarly, whenever I put images in the HTML files, I reference them with <img src="image.jpg" />. So, again, if image.jpg is not in the same folder as the HTML file, there will be no link.

I have a folder with 30 different HTML files and a bunch of pictures and CSS files. Each HTML file has a dropdown menu with hyperlink references to get to all the other HTML files (<a href="file.html"></a>). So, again, if all the HTML files are not in the same folder, there will be no link.

I am looking for a way to basically upload the entire folder to some free web hosting service so that the functionality that I have set up in the folder will remain on the web.

Any ideas?