.flow-right {
	flow-children: right;
}
.flow-down {
	flow-children: down;
}
.scroll-x {
	overflow: scroll squish;
}
.fill {
	width: 100%;
	height: 100%;
}
.fill-height {
	height: 100%;
}
.fill-width {
	width: 100%;
}
.even-space-vertical {
	height: fill-parent-flow(1);
}
.half-space-vertical {
	height: fill-parent-flow(0.5);
}
.even-space-horiz {
	width: fill-parent-flow(1);
}
.margin-4 {
	margin: 4px;
}
.text-center {
	text-align: center;
}
.panel-center {
	vertical-align: center;
	horizontal-align: center;
}
.panel-right {
	horizontal-align: right;
}
.panel-left {
	horizontal-align: left;
}
.panel-bottom {
	vertical-align: bottom;
}
.panel-top {
	vertical-align: top;
}
.panel-center-vertical {
	vertical-align: center;
}
.square {
	width: height-percentage(100%);
}
.hero-icon {
	width: height-percentage(155%);
}
.is-visible {
	opacity: 1;
}
.is-not-visible {
	opacity: 0;
}