$placements: 'top', 'bottom', 'left', 'right';
$origins: bottom, top, right, left;
$backdrop-origins: 0% 25%, 0% -50%, 50% 0%, -50% 0%;
$backdrop-border-radii: 40% 40% 0 0, 0 0 30% 30%, 50% 0 0 50%, 0 50% 50% 0;

$namespace-prefix: '__NAMESPACE_PREFIX__';
$placements: 'top', 'bottom', 'left', 'right';
$origins: bottom, top, right, left;
$backdrop-origins: 0% 25%, 0% -50%, 50% 0%, -50% 0%;
$backdrop-border-radii: 40% 40% 0 0, 0 0 30% 30%, 50% 0 0 50%, 0 50% 50% 0;

Use namespace prefix variable for demo
Use namespace prefix variable for demo
