body {
  background-color: #595fd9;
  background-image: url("https://starsandmoons.neocities.org/star%20bg.gif");
  margin: 15px 15px;  
}

.main {
  background: #595fd9;
  color: #fff;
  padding: 10px 10px;
  margin: 20px 20px;
}