.foo{}fieldset.facebook-login-block{display:inline;float:left;margin:5px}.facebook-btn{float:left;background-image:url(images/facebook-signing.png);background-repeat:no-repeat;width:150px;height:23px;margin:5px}.facebook-btn:hover{background-position:0 -24px}.facebook-btn:active{background-position:0 -48px}