// zIndex scale
$zIndex-1:  -100;
$zIndex1:  100;
$zIndex2:  200;
$zIndex3:  300;
$zIndex4:  400;
$zIndex5:  500;
$zIndex6:  600;
$zIndex7:  700;
$zIndex8:  800;
$zIndex9:  900;
$zIndex10: 1000;

// zIndex implementations
$zIndex-content:        $zIndex5;

$zIndex-adminMenu:      $zIndex9;