Zoho form representation on tablet... :'(

Zoho form representation on tablet... :'(

Hello, dear Zoho.
I am trying to embed a form on a website, using <iframe>, and it looks very nice on mobile and desktop, but not on tablet, please see the attached image. It sticks to right.

<iframe style="height:1500px;width:100%;border:none;" src="https://forms.zohopublic.com/ArmadaLED/form/ProductEnquiry/formperma/XXXXXXXX" scrolling="no" frameborder="0"></iframe>

Here is the page:
https://armadaled.org/luminarias_bombillas_reflectores_rd/

Any idea how can I overcome this little problem?

zoho form on tablet :'(