Crop webpage(url) content inside an iframe

Question

I have a requirement to embed an url inside iframe, which fits inside a lightning component. I would like to request you all to help me with an approach, where webpage contents can be disabled/cropped so only required consents of page can be viewed inside my iframe. Display: none works, when i use it on webpage using inspect element. But it won't support inside iframe,

Used display:none, it did not result in cropping the webpage.