content: 
  
  import React from 'react';
  import '../css/MainHeader';
  
  export default class MainHeader extends React.Component{
  	componentDidMount() {
  	}
  	render() {
  		var backImg=this.props.img;
  		var backstr='url('+backImg+')';
  		return (
  			<section className="MainHeader" style={{backgroundImage:backstr}} >
  				<div className="wrap">
  					<p>{this.props.kilo}</p>
  					<p>{this.props.beta}</p>
  				</div>
  				<div className="mask"></div>
  			</section>
  		);
  	}
  }