box-shadow($x = 0, $y = 0, $blur = 1px, $alpha = 1)
	$val = $x $y $blur rgba(0, 0, 0, $alpha)
	-webkit-box-shadow: $val
	-moz-box-shadow:    $val
	box-shadow:         $val

.box
	base = #f938ab
	color:        saturate(base, 5%)
	border-color: lighten(base, 30%)
	div
		box-shadow: 0 0 5px 0.4

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