Adsense Issues On Mobile

Question:
How do i stop Adsense from showing increased height on mobile?

Product:
Using Wix Editor

What are you trying to achieve:
I am trying to integrate square adsense ads into the wix blog. they work on desktop but on mobile they stretch to triple the height and make it difficult for the user to scroll.

What have you already tried:
I have tried changing the CSS and setting a fixed height but it still changes on mobile

Additional information:
You can view an adsense ad on mobile at the bottom of this page: https://www.theoatrix.net/post/theoatrix-s-1-99-slayer-guide-osrs

this is my ad code:

<div style="margin: 0; height: 250px; overflow: hidden; position: fixed"><script async crossorigin="anonymous"></script>
<ins class="adsbygoogle"
     style="display:block"
     data-ad-format="auto"
     data-full-width-responsive="true"></ins>
<script>
     (adsbygoogle = window.adsbygoogle || []).push({});
</script>
</div>