How do i change a line in the html?

Found this line using Google Inspect

<a class="sqs-lightbox-meta-trigger">•</a>

As this isn't CSS, how do I change it?  I'm aware of code injection, and how to change this into what I'm after, but I don't know how to put this into the code injection in a way that it's read correctly.

The code I wish to change it to:

<a class="sqs-lightbox-meta-trigger">&#9432</a>

(I'm just changing the symbol that activates the meta pop up shown on the lightbox over gallery images)

You can't edit HTML unless you use Code Block

You can use CSS visibility: hidden to hide current text and CSS :after or :before to insert next text

Thanks very much, yes that did the trick 🙂

For others that stumble here, the solution for this specific text replacement case was quite simple:

.sqs-lightbox-meta-trigger {
  visibility: hidden;
}
.sqs-lightbox-meta-trigger:after {
  content:'ⓘ';
  visibility: visible;
}

Thank you guys for this!