contiago-toolbar/app/containers/ArticlePage/components/Attachments/Files/DownloadIcon.js

One of the options for outputting content from contiago xml-server

import styled from 'styled-components';
import { MdFileDownload } from 'react-icons/lib/md';

export default styled(MdFileDownload)`
  margin: 1vw;
  font-size: 2.5vw;
`;