contacts/css/_animations.scss

@keyframes pulse {
	0% {
		box-shadow: 0 0 0 0 rgba(50, 50, 50, .4);
	}
	70% {
		box-shadow: 0 0 0 15px rgba(50, 50, 50, 0);
	}
	100% {
		box-shadow: 0 0 0 0 rgba(50, 50, 50, 0);
	}
}