First, you should create gh-pages branch that special branch of GitHub.
You can find and create it in setting page of you project by the button Automatic page generator.
The branch will map to the doamin http://username.github.io/project/

So the path should be stylesheets/main.css not /stylesheets/main.css

Remember that GitHub pages are scoped with repo names.

You are including your CSS with

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

This resolves to https://rusne118.github.io/css/style.css

but you want https://rusne118.github.io/mile-stone-one/css/style.css

Simply change link tag to

<link rel="stylesheet" href="/mile-stone-one/css/style.css">

Hello @dexterandre! It definitely sounds like your old version is being cached, and @yangciou, @yuyoux, @nadiajoyce, @jaikangam93, and @csteitz01 are correct in their suggestions. Sometimes a hard refresh of your browser (as opposed to a standard refresh) is necessary to really clear out the old file. Below are some instructions for how to do this in various browsers.

Chrome:

Option 1: Hold down Ctrl and click the Reload button (Windows) or Shift and click the Reload button (Mac)
Option 2: Hold down Ctrl and press F5 (Windows) or Cmd and Shift and R (Mac)

Firefox:

Option 1: Hold Ctrl and press the F5 key (Windows) or Shift and click the Reload button (Mac)
Option 2: Hold down Ctrl and Shift and R (Windows) or Cmd and Shift and R (Mac)

Internet Explorer:

Option 1: Hold Ctrl and press the F5 key
Option 2: Hold the Ctrl key and click the Refresh button.

Safari:

Press Shift and click the Reload button

Additional Resources:

Here are some resources on the subject of clearing browser cache:

Chrome:
https://support.google.com/accounts/answer/32050

Firefox:
https://support.mozilla.org/en-US/kb/how-clear-firefox-cache

Microsoft Edge:
https://support.microsoft.com/en-us/help/10607/microsoft-edge-view-delete-browser-history

Safari:
https://support.apple.com/guide/safari/clear-your-browsing-history-sfri47acf5d6/mac

You are right that there's a problem with the paths. The problem is that you're using absolute paths instead of relative. You site is deployed at https://jelkeis.github.io/proyectoAP/, and for example the stylesheet is included like this:

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

Because of the slash (/) at the beginning, your browser looks at the path from the base of the domain (https://jelkeis.github.io/), which leads to https://jelkeis.github.io/CSS/style.css. That doesn't exist.

Ideally, you should use a relative link instead:

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

That will make the browser start looking from the current directory (where your index.html is).

Another option would be to include the /proyectoAP/ part in the link, but then it'd break if you deploy it elsewhere.

See also: https://developer.mozilla.org/en-US/docs/Learn/Common_questions/Web_mechanics/What_is_a_URL#absolute_urls_vs._relative_urls

Hi Klaudiablo,

Using a raw.githubusercontent.com file as a link to your CSS is not recommended, as the raw mode serves files with the Content-Type: text/plain header, which means that neither HTML, CSS, nor JS can be used directly in web pages.

To link a CSS file hosted on GitHub to an HTML file, you can use a relative or absolute path. If the CSS file is in the same repository as the HTML file, you can use a relative path, as demonstrated by the code snippet below:

This is by design as you should not be serving or linking to raw files in this manner.

It could also be seen as abuse of their services as linking to the raw file is using GitHub as a content delivery network (CDN).

Instead, you need to make use of the GitHub Pages feature and link to the file from there. Which, when you build your pages will be along the lines of:

<link rel="stylesheet" href="http://repo-owner.github.com/repo/css/style.css">

In your case, it would be here:

<link rel="stylesheet" href="http://dublintech.github.com/JavaScript_Examples/jsquiz/css/jquiz.css">

And when it is referenced from the correct location, it will be served as text/css as expected/wanted.