Set or Change Height and width of Google adsense by Javascript and CSS Code
<ins class="adsbygoogle"
style="display:inline-block;min-width:100px;max-width:500px;width:100%;height:100px"
data-ad-client="ca-pub-1234"
data-ad-slot="5678"></ins>
<script async src="https://pagead2.googlesyndication.com/pagead/js/adsbygoogle.js"></script>
<script>(adsbygoogle = window.adsbygoogle || []).push({});</script>
On 21 August 2019 Google Support says there is an improvement in the Google Ad sense Sizing ,You can change or customize the ads position as well as the height and width .To work below code Responsive Ad Unit must be placed inside Container With Fixed or Limited Height.If you want to limit the height of your responsive ads, you will need to modify your responsive ad code. This example shows you how to modify your responsive ad code to specify a fixed height of 150 px and a variable width from min-width 200 px to max-width 500px