* {
	margin: 0;
	padding: 0;
	box-sizing: border-box;
}

body {
	background: url("../images/bg_day.jpg") 50% 50% no-repeat;
	background-size: cover;
	
}

body.night{
	background-image: url("../images/bg_night.jpg");
}
body.sunrise{
	background-image: url("../images/bg_sunrise.jpg");
}
body.sunshine{
	background-image: url("../images/bg_sunshine.jpg");
}
.container {
	display:table-cell;
	min-width: 100vw;
	max-width: 100vw;
	height: 100vh;
	text-align: center;
	vertical-align: middle;
	background-image: linear-gradient(to bottom, rgba(0,0,0,.9),  rgba(0,0,0,0));
}

img {
	max-width: 80%;
	max-height: 90%;
}