h1{
  color:blue;
  text-align: center;
  background-color:lightgray;
}
body{
  background-image: url(imagem/Galaxia.jpg);
  }
h2 {
  color:blue;
  text-align: center;
  }
p{
  color:darkblue;
  
  }
img {
  margin: auto;
  display: block;
  width: 650px;
  height: 350px;
  
}