How do I load a css file for an iframe?

Hi! The manual says you can add css files to use them with iframes. But how?

I found no action to load or set a css file for my iframe.

If I set the purpose to stylesheet it will apply to anything, right? So I want to use different css files without a purpose. But how do I load and apply them?

From the manual:

CSS files have a Purpose property in the Properties Bar. The default is Stylesheet which means Construct will use it as an additional stylesheet for your project. The purpose can also be set to (none) in which case its styles will not automatically be applied, and the stylesheet will merely be exported as an additional file on export. This may be useful if the stylesheet is needed for other purposes, such as for the content of an iframe.

Just use a normal <link rel="stylesheet" href="..."> tag in the iframe's HTML.

Thanks! So I can't use it to apply additional CSS rules to an external page I load? Or does this work with a global stylesheet I use in C3?

No, external pages have their own styles, and web content can't normally override that.

Ok, thanks.

I found an Android app that displays only part of another website and tried to replicate this in C3: construct.net/en/forum/construct-3/how-do-i-8/hide-page-elements-iframe-171726