body{
	background-image: url(../img/bcg.jpg);
	background-repeat: repeat;
    text-align: center;  
}  

.main {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  margin: auto;
  width: 978px;
  height: 666px;
}