Processes CSS to wrap CSS grid usage in @supports. This is typically used to have browsers like IE11 fall back to a mobile design instead of trying to render with it's partial CSS Grid implementation.

.some-stuff {
  grid-column-start: span 12;
  font-style: italic;
}

to:

@supports (display: grid) {
  .some-stuff {
    grid-column-start: span 12;
  }
}
.some-stuff {
  font-style: italic;
}

Usage With Stylis

npm install css-grid-supports-wrapper

import stylis from 'stylis';
import { stylis } as gridWrapper from 'css-grid-supports-wrapper';

stylis.use(gridWrapper);

const test = stylis(``, `
  h1 {
    width: calc(random() * 10);
    font-style: italic;
    grid-column-start: span 12;
  }

  h2 {
    grid-column-start: span 10;
  }

  h3 {
    grid-column-start: span 8;
    color: red;
  }
`);

console.log(test);

This can be used with emotion using the create-emotion package.