gatsby-theme-wordpress-mdx/src/Shortcodes/BgImageShortCode.js

<p align="center"> <img width='200px' alt="Gatsby Theme" src="https://raw.githubusercontent.com/artezan/gatsby-theme-wordpress-mdx/master/%40artezan/gatsby-theme-wordpress-mdx/dn.png" />

/** @jsx jsx */
import { jsx } from 'theme-ui'
import BackgroundImage from 'gatsby-background-image'

export const BgImage = props => <BackgroundImage {...props} />