With the DOM HTMLIFrameElement object, scripts can access the window object of the framed resource via the contentWindow property. How to add Background-Color for Text Width Instead of Entire Element Width using CSS ? Asking for help, clarification, or responding to other answers. The topmost browsing context the one with no parent is usually the browser window, represented by the Window object. css solutions do not work when the content of the iframe changes (eg, when the iframe content makes ajax calls etc. There is no aspect-ratio property, but we can do this with CSS. People navigating with assistive technology such as a screen reader can use the title attribute on an (vh is viewport height). Examples might be simplified to improve reading and learning. Content Discovery initiative April 13 update: Related questions using a Review our technical responses for the 2023 Developer Survey. When a gnoll vampire assumes its hyena form, do its HP change? Looking for job perks? What risks are you taking when "signing in with Google"? Did the drapes in old theatres actually say "ASBESTOS" on them? It only supports pixels. And you might just qualify for the Olympics with a bit of statistics! What does "Smote their breasts" signify in Luke 23:48? A Content Security Policy enforced for the embedded resource. Found an error? The width needs to be percentage based (100% of div) and the height calculated as a percentage of the generated width. Adam is a technical writer who specializes in developer documentation and tutorials. I want to find its dimensions. A URL of a long description of the frame's content. How to make width and height of iframe same as its parent div? The