Hide Excerpt and Title showing within iframe

Is there a way to hide the title, cover image and excerpt that are embedded within the iframe… I would like those to only show on my listing page template and not on the single template. But I cannot overwrite css styles in the iframe unfortunately, it is not working. As you can see the title is already called in my template so now it is showing up 3 times. How would you recommend I make this customization to the plugin output so that it only shows the email newsletter embedded?

Thanks in advance! ??

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