How to make a page full height in Next.js

index.js

const FullHeightPage = () => (
  <div>
    Hello World!
    <style global jsx>{`
      html,
      body,
      body > div:first-child,
      div#__next,
      div#__next > div {
        height: 100%;
      }
    `}</style>
  </div>
)

what about the main tag?

what about the main tag?

What version of next are you using and do you have anything in _app?

goat