Everything Veyra left for you so far has been direct hidden in comments, DOM, CSS, console, transmissions, reflections, letterheads, and event handlers. But this case is different.
The keystone is on this page. Its characters were never typed into the HTML as text; they were fed in on the side and assembled by the browser during render. The HTML only says where. The stylesheet says how. The browser composes the result and paints it where your eye can't read it.