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width="100%" for an iframe, breaks responsiveness CSS directives
In a MediaWiki website I embed a PHP file containing a contact form via <iframe> with the following attribute pattern:
width="100%" frameBorder="0"
My problem
I need the iframe to stretch 100% inside the content wrapper containing it so I gave it width="100%" but then CSS responsiveness directives broke down as evident from the pictures below (true at least in some web browser zooming levels).
With width="100%"
With width="1000"
My question
What may cause that problem and how to handle it?
1 answer
Changing @media screen and (min-width: 922px) to @media screen and (min-width: 720px) helped.
Since the iframe wrapper is smaller than 992px the iframe children appeared relative to the wrapper according to a 992px breakpoint hence mobile display started in a way unsuitable for laptops (but suitable for desktops, I assume).
After changing the breakpoint to 720px, the iframe no longer gets mobile display on my laptop.
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