/*** animated street scene (houses / trees / cars / bus / birds) ***/

.street-scene {
	position: relative;
	overflow: hidden;
}

.street-scene .sts-track {
	position: absolute;
	top: 0;
	left: 0;
	height: 100%;
	display: flex;
	align-items: stretch;
	will-change: transform;
	z-index: 1;
}

.street-scene .sts-house {
	height: 100%;
	width: auto;
	flex: 0 0 auto;
	display: block;
	-webkit-user-select: none;
	user-select: none;
	pointer-events: none;
}

.street-scene .sts-sprite {
	position: absolute;
	pointer-events: none;
	will-change: transform;
	display: block;
	-webkit-user-select: none;
	user-select: none;
}

.street-scene .sts-tree,
.street-scene .sts-sign {
	bottom: 0;
	z-index: 2;
}

.street-scene .sts-vehicle {
	bottom: 0;
	z-index: 3;
}

.street-scene .sts-bird {
	z-index: 4;
}

.street-scene .sts-bird-back {
	z-index: 0;
}