How do I remove the horizontal displacement map of an iframe?

Maybe it's a very simple aim, but I'm not getting how to do it.

How to remove this horizontal displacement bar in the iframe? When I export to an Android app, it turns to be really

Generally speaking, you need to either have your iframe large enough to fit the contents, or you need to format the contents so they fit within the width of your iframe.

And how do I fit the contents to this width?

Are you in control of the contents?

Format with css, rearrange elements, remove unnecessary text, resize images, ect.

No control of the contents. It's just a website. My aim is to turn off the horizontal slider in order to center properly the website navigation.

No way. Construct 3 is unable to eliminate this horizontal bar.

Try making your I frame and viewport wider and scaling down.