My app is published to public ,how to take off the sign in title on the top of right in every pages?

[cnt_bao]

hi dear,
my app is published to public ,how to take off the sign in title on the top of right in every pages?
see below pic, how can i take off the red line on the top?
thanks!

[Amelia]

Hello! To hide the top navigation toolbar, append ?embed=true to the URL of your app as explained in this guide.

[cnt_bao]

Thanks！ @Amelia