body {
  background-color: #2a2a2a;
  background-image: url("bg2.png");
  background-repeat: no-repeat;
  background-attachment: fixed;
  background-position: top; 
}


div {
  position: fixed;
  top: 50%;
  left: 50%;
  margin-top: -130px;
  margin-left: -130px;
}