$s-font-weight-thin:        100;
$s-font-weight-extra-light: 200;
$s-font-weight-light:       300;
$s-font-weight-regular:     400;
$s-font-weight-medium:      500;
$s-font-weight-semi-bold:   600;
$s-font-weight-bold:        700;
$s-font-weight-extra-bold:  800;
$s-font-weight-black:       900;