react js app not working

function Application() {
  return (
    <div className="application">
    <div className="header">
      <h1>Scoreboard</h1>
    </div>


    <div className="players">
     <div className-"player">
      <div className="player-name">
        Larry Cimosz
    </div>
    <div className="player-score">
      <div className="counter">
        <button className="counter-action decrement"> - </button>
        <div className="counter-score"> 31 </div>
        <button className="counter-action increment"> + </button>
      </div> 
    </div>
   </div>
  </div>
 </div>
  );
}

ReactDOM.render(<Application />, document.getElementById('container'));