Code Block - Need auto height for third-party widget

Hello, how can I make this section have auto height? As seen in the video, this is a third-party widget and the height goes past the section and footer. It also continues behind the sections below the widget.

I've used both Fluid and Classic editors as well as added the code below but it hasn't worked.

div#block-839fcfb961ef495a7787 iframe {
    height: 2000px !Important;
}

Thanks so much for your help!

An iFrame doesn't know the contents, it's just a method of loading contents from another website on your website. That means that the iframe loaded on your website can't resize to accommodate the contents, so the only way of having all of the contents displaying is to make the height large, or reply on scroll bars.

Thanks, Ziggy for the response. I think I figured it out using this code. I removed "iframe" and changed the height:

div#block-839fcfb961ef495a7787 {
    height: auto !Important;
}