# Hubspot Forms - iframe after form submit button?

**URL:** <https://community.hubspot.com/t/hubspot-forms-iframe-after-form-submit-button/74389>\
**Category:** CMS Development\
**Tags:** forms\
**Created:** [February 2, 2023, 8:41pm UTC](https://community.hubspot.com/t/hubspot-forms-iframe-after-form-submit-button/74389 "2023-02-02T20:41:31Z")\
**Posts on this page:** 1\
**Page:** 1

<div class="post-metadata">

**Author:** ![DevenD](https://d10pqhm3lwygmk.cloudfront.net/user_avatar/community.hubspot.com/devend/32/75613_2.png) [@DevenD](https://community.hubspot.com/u/DevenD)\
**Post date:** [February 2, 2023, 8:41pm UTC](https://community.hubspot.com/t/hubspot-forms-iframe-after-form-submit-button/74389/1 "2023-02-02T20:41:31Z")

</div>

Hey all,  
I was recently validating a page while making some edits and noticed it was triggering a “body **seen but an element of the same type was already open"** on the page.  
Upon digging further it looks like a hubspot form we have for blog subscriptions in the navigation has an input with the ‘Thank you’ message data, right after the submission button but **also** a seemingly pointless iframe right before the ‘\</form\>’ closing tag.  
Looks something like this:  
```  
\<iframe name=“target\_iframe\_numbersAndStuff” style=”/\* display: none; \*/"\>  
#document  
\<html\>\<head\>\</head\>\<body\>\</body\>\</html\>  
\</iframe\>  
```  
Was just wondering if this surved any purpose as nothing about it changes after a submission and it’s triggering a w3 error?  
\*Blacked out some irrelevant content

 ![Screen Shot 2023-02-02 at 2.55.15 PM.png](https://d2qpr2jzcazej7.cloudfront.net/original/3X/0/c/0cf4b0202c368f01b758af554eeaa45dcaecbf6f.png)