Block Auto-size for iframe?

[victor.back]

Hi. 
Is there possible to block the auto-size setting for iframes in visualisation, tried using some additional CSS an additional classes but no success.

Code:

.iframeSpotRing {
  height: 670px;               
  overflow-y: auto;            /* for adding scrollbar if conent more then 670px */
  transform: none !important;  /* block autosize */
  width: 100% !important;     
  pointer-events: all !important;
}

[admin]

Can you explain your use case? transform is applied to the parent plan container element so resetting transform of the iframe won't change anything.

[victor.back]

Can you explain your use case? transform is applied to the parent plan container element so resetting transform of the iframe won't change anything.

I have set to auto-size in the visu settings.  But for a specific iframe thats open in one plan, I would like to not have auto-size, is this possible? 
Because the iframe is for a smaler size than the actual plan thats supose to be shown here, so I want to be able to scroll down inside the iframe. But when tha auto-size is on the view inside the iframe gets auto scaled and result in too small view.  

Hope I get the explanation good enough