iFrame doesnt work

Design help Custom code
1

Hello

I would like to embed an iFrame on my Webflow page using embed code. Unfortunately, this is not displayed.

What am I doing wrong? Do I have to set something up in Webflow?

iFrame:

<iframe id=“tarifrechner” src="https://secure2.hansemerkur.de/ola-ui2/1/490/tr/basisdaten?adnr=4896692”
        frameborder=“0” scrolling="no” 
        style="width: 100%; min-height: 500px;” 
        onload=“adjustIframeHeight()”>
</iframe>

In the head code:
<meta http-equiv=“Content-Security-Policy” content=“frame-src ‘self’ https://secure2.hansemerkur.de;”>

Messages frontend:

the iframe is not loaded. it says in the frontend in the iFrame: secure2.hansemerkur.de has refused the connection.

This in the console: Refused to frame ‘https://secure2.hansemerkur.de/’ because an ancestor violates the following Content Security Policy directive: “frame-ancestors ‘self’”.

2

It’s not Webflow related- the URL you’re trying to embed is blocking embedding. The specific CSP directive says that only other pages on its own domain can frame it.