body {
  background-image: url("stars.gif");
  color: white;
  font-size: 150%;
}
  .center-box {
      background-color: #310440;
      color: white;              
      padding: 20px 40px;        
      max-width: 1300px;           
      margin: 100px auto;             
      text-align: center;
}