EDIT: This was solved, thank you so much to admin Darwin and everyone else who commented! :D

Howdy y'all! I'm trying to customize the Disqus Comments section on my comics site, but nothing I do seems to work. I've put everything into the CSS sheet but nothing changes. What I want to do is make the comments take up 50% width on the page instead of the default 100% width. I also want to change the background color/image so it is no longer transparent, but I can't seem to do so. I'm using the Rarebit CMS for Neocities, can anyone lend me a hand? The code I use it copy/pasted down below. Thank you!

CSS CODE:
/* Disqus Comments Section */

disqus_thread {
width: 50%;
background-color: #00000;

HTML CODE:
<script>
/**
* RECOMMENDED CONFIGURATION VARIABLES: EDIT AND UNCOMMENT THE SECTION BELOW TO INSERT DYNAMIC VALUES FROM YOUR PLATFORM OR CMS.
* LEARN WHY DEFINING THESE VARIABLES IS IMPORTANT: <a href="<a href="<a href="https://disqus.com/admin/universalcode/#configuration-variables">https://disqus.com/admin/universalcode/#configuration-variables</a>">
<a href="https://disqus.com/admin/universalcode/#configuration-variables">https://disqus.com/admin/universalcode/#configuration-variables</a>
</a>">
<a href="<a href="https://disqus.com/admin/universalcode/#configuration-variables">https://disqus.com/admin/universalcode/#configuration-variables</a>">
<a href="https://disqus.com/admin/universalcode/#configuration-variables">https://disqus.com/admin/universalcode/#configuration-variables</a>
</a>
</a> */
/*
var disqus_config = function () {
this.page.url = window.location.href; // Replace PAGE_URL with your page's canonical URL variable
this.page.identifier = PAGE_IDENTIFIER; // Replace PAGE_IDENTIFIER with your page's unique identifier variable
};
*/
(function() { // DON'T EDIT BELOW THIS LINE
var d = document, s = d.createElement('script');
s.src = '<a href="<a href="<a href="https://tiptheferrymen.disqus.com/embed.js">https://tiptheferrymen.disqus.com/embed.js</a>">
<a href="https://tiptheferrymen.disqus.com/embed.js">https://tiptheferrymen.disqus.com/embed.js</a>
</a>">
<a href="<a href="https://tiptheferrymen.disqus.com/embed.js">https://tiptheferrymen.disqus.com/embed.js</a>">
<a href="https://tiptheferrymen.disqus.com/embed.js">https://tiptheferrymen.disqus.com/embed.js</a>
</a>
</a>';
s.setAttribute('data-timestamp', +new Date());
(d.head || d.body).appendChild(s);
})();
</script>

Website if anyone needs a more visual example: https://tiptheferrymen.com/