Iframe allow attribute not working

Contribute Feature
5

For security we are very strict of what HTML attributes can be rendered in our page when they come from user input.

What you can do to get that is:

<div data-my-special-attr="42">
  <iframe src="http://example.com">
</div>

and then target that with your CSS / JS selector:

div[data-my-special-attr="42"] > iframe {
  border-color: pink;
}
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