.sprite{display:inline-block;overflow:hidden;background:url(../images/sprite.png) no-repeat}.but-facebook{width:187px;height:34px;background-position:-569px -2px}.but-linkedin{width:187px;height:34px;background-position:-380px -2px}.but-twitter{width:187px;height:34px;background-position:-191px -2px}.but-viadeo{width:187px;height:34px;background-position:-2px -2px}