I want to make background color black and text color white for the content inside iframe from its default of normal white background and black text. The iframe src attribute points to different domain to which I have no access or cannot place any file or stylesheets in that domain. So given these conditions is it possible to make just these style changes in the iframe content and if so then how?
You can not change the styles of the page that resides within the iframe.
Generally, web application allows script running between pages(parent and iframe pages) in the same domain based on same-origin-policy. Unfortunately it does not support scripts if different domain. The policy does not allow it.
The iFrame embed code can be easily customized directly from the embed code. Often when a form is embedded with an iFrame there is a default scrolling bar if the form is larger than the iFrame. In order to avoid this, there are two options that can be added to easily adjust the iFrame.
We can use inline CSS for the iframe by using CSS inside the iframe tag. Example: The design of the HTML page is implemented as follows.
The only possibility would be to load the iframe content through a proxy of yours and modify the HTML content. You can not access iframes from another domain via JavaScript.
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