article .hero-copy .heading {
    font-size: 3vw;
}

@media only screen and (max-width: 991px) {
	article .hero-copy .heading {
	    font-size: 4vw;
	}
}

@media only screen and (max-width: 543px) {
	article .hero-copy .heading {
	    font-size: 8vw;
	}
}