Hi there, I´m trying to creat a infinite background image with sprite and background-size using:

background-size:contain; but when I put it on the image fly away instantly.

Any idea, tutorial or link about this?

My code is:

  background: #0e3d77 url(../pagoranking_child/images/pagorakingsprite.png) no-repeat center -330px;
  height: 181px;
  border-top: 1px solid #000;
  border-bottom: 1px solid #000;
  background-size: contain;