contiago-toolbar/app/containers/ToolbarContainer/components/Container.js

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

import styled from 'styled-components';

export default styled.div `
    position: fixed;
    height: 100vh;
    left: 0;
    z-index: 99;
    right: 0;
    top: 0;
    bottom: 0;
    background: rgba(0,0,0,0.8);
`;