Trying to Explain...

first .py file...

template_data = {
        "title" : state,
    }
    return render_template("ServoKing.html", **template_data)

if __name__ == "__main__":
    app.run(host="0.0.0.0", port=5000, debug=False)

First.html...

<div>
  <center><iframe src="192.168.x.xx" height="750" width="750"></iframe></center>
</div>