animate.css/source/pulse.css

/* originally authored by Nick Pettit - https://github.com/nickpettit/glide */

@-webkit-keyframes pulse {
    0% { -webkit-transform: scale(1); }	
	50% { -webkit-transform: scale(1.1); }
    100% { -webkit-transform: scale(1); }
}
@-moz-keyframes pulse {
    0% { -moz-transform: scale(1); }	
	50% { -moz-transform: scale(1.1); }
    100% { -moz-transform: scale(1); }
}
@-ms-keyframes pulse {
    0% { -ms-transform: scale(1); }	
	50% { -ms-transform: scale(1.1); }
    100% { -ms-transform: scale(1); }
}
@-o-keyframes pulse {
    0% { -o-transform: scale(1); }	
	50% { -o-transform: scale(1.1); }
    100% { -o-transform: scale(1); }
}
@keyframes pulse {
    0% { transform: scale(1); }	
	50% { transform: scale(1.1); }
    100% { transform: scale(1); }
}

.pulse {
	-webkit-animation-name: pulse;
	-moz-animation-name: pulse;
	-ms-animation-name: pulse;
	-o-animation-name: pulse;
	animation-name: pulse;
}