.bg {
	background-size: cover;
	background-repeat: no-repeat;
	background-position: center;
	width: 100%;
	height: 100vh;
	background-image: url('../img/construcao.jpg');
}



@media(max-width: 1141px){
	.bg {background-image: url('../img/construcao2.jpg'); }
}

@media(max-width: 601px){
	.bg {background-image: url('../img/construcao3.jpg'); }
}