msgba-web/js-src/components/center-element.jsx

import React from 'react';

export default function CenterElement(props) {
    let hidden = props.hidden;
    if (hidden == null) {
	hidden = false;
    }
    return (
        <div style={{
		display: hidden ? 'none':''
	    }} className="center-content">{props.children}</div>
    );
}