Global Styles
Use the Emotion Global component to add global CSS with theme-based values.
By default, the ThemeProvider component will apply styles in theme.styles.root to the <body> element.
It will also apply color and background-color styles based on theme.colors.text and theme.colors.background respectively.
Edit the page on GitHubimport React from 'react'import { Global } from '@emotion/core'export default props =><Globalstyles={theme => ({'*': {boxSizing: 'border-box',}})}/>