How disqus able inherit parent's styles?

Question

You can't inherit parent's properties into an iframe Source: Iframe inherit from parent.

But how come disqus able to inherit it's background color from parent? For example this site: https://kostasbariotis.com/geospatial-query-with-mongodb-and-node-js/

Answer 1

Because the <iframe> is transparent.

Example:

<div style="background-color:#000;">
    <iframe src="about:blank" allowtransparency="true" style="background-color: transparent;" />
</div>