// Loader
$size-list = "mini" "small" "middle" "large" "massive"

$loader-size = var(--loader-size, (18 / 14) em)
$loader-offset = var(--loader-offset, "calc(%s / -2)" % $loader-size)
$loader-margin = var(--loader-margin, $loader-offset 0 0 $loader-offset)