@media (max-width: 480px) {
    jumbotron {
	background-image: url(images/YCRCeHead.jpg); background-repeat: no-repeat; background-size: 100% auto; max-width: 1280px; padding-top: 1%; padding-bottom: 8%;
    }
}


@media (min-width: 481px) and (max-width: 1024px) {
    jumbotron {
	background-image: url(images/MAINheader.jpg); background-repeat: no-repeat; background-size: 100% auto; max-width: 1280px; padding-top: 1%; padding-bottom: 8%;
    }
}



@media (min-width: 1025px) {
    jumbotron {
	background-image: url(images/MAINheader.jpg); background-repeat: no-repeat; background-size: 100% auto; max-width: 1280px; padding-top: 1%; padding-bottom: 8%;
    }
}