Possibly thousands of unknown to me addresses in browser derived source code of my GitHub Pages website project, through Cloudflare

Our website (https://www.hcsl.com), is based on GitHub Pages, via Cloudflare.
Viewing the source of any of our webpages, I found out that it included possibly thousands of unknown to me web addresses, as you can see at the end.
Are these blocked addresses?

Part of the Chrome derived Source of our home page (view-source):

html { overflow: auto; }
html, body, iframe {
margin: 0px;
padding: 0px;
height: 100%;
border: none;

iframe {
display: block;
width: 100%;
border: none;
overflow: auto;
{ display: none !important }

I’m not sure how you’re seeing that, as it’s CSS.

Your site is an iframe, so all page source looks the same:

I don’t see that code anywhere on your site. Are you using an ad blocking plugin in your browser that is injecting that CSS to block ads? That’s what it looks like.

Thank you both sdayman and i40west!
As i40west suggested, it is actually “CSS, injected by ad blocking plugin (ABP) in my browser to block ads”.
False alarm!
I am grateful!

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