Inject page with dynamic react app

I would like to insert a dynamic sized react app with the params:


html, body, #app, #app>div {
  height: 100%
}

so it will take the entire screen on that page.

Currently the html element looks different in different screen sizes which is making the page really bad.

What I need is one page that will be a react frontend but run on top of wix.

Please help with this