一番理解しやすかったやり方を備忘録。
@import "compass";
@import "../img/icons/*.png";
@include all-icons-sprites;
$sprites: sprite-map("../img/icons/*.png");
.btn {
background-image: $sprites;
background-position: sprite-position( $sprites, facebook );
&:hover{
background-position: sprite-position( $sprites, facebook_off );
}
width:52px;
height:52px;
}
