CompassでCSSスプライト（Retina対応）今はコレです。 $sprite2x: sprite-map("sprite2x/*.png"); $sprite-img:sprite-url($sprite2x); @mixin sprite-background2x($name) { background-image: sprite-url($sprite2x); background-repeat: no-repeat; overflow: hidden; width: image-width(sprite-file($sprite2x, $name)) / 2; height: image-height(sprite-file($sprite2x, $name)) / 2; $ypos: round(nth(sprite-position($sprite2x, $name), 2) / 2); background-positio
