body {
  margin: 0;
  background: url("../loading/blue-loader.gif") no-repeat;
  background-size: 70px;
  background-position: left 49% top 200px;
}



@media (min-width: 768px) {
  body {
    background-size: 120px;
    background-position: left 50% top 300px;
  }
  
}