$rhythm-tight-half: 0.4em !default;
$rhythm-tight: 0.8em !default;
$rhythm-base: 1.6em !default;
$rhythm-loose: 3.2em !default;

$hairline-border-width: 1px !default;
$dashed-border-width: 2px !default;
$thick-border-width: 0.25em !default;

$pad-tight-vertical: 2px !default;
$pad-tight-horizontal: 6px !default;
$pad-vertical: 6px !default;
$pad-horizontal: 12px !default;
$pad-loose-vertical: 10px !default;
$pad-loose-horizontal: 18px !default;

$buffer-very-tight: 0.4rem; // em
$buffer-tight: $buffer-very-tight * 2; // 0.8em
$buffer: $buffer-tight * 2; // 1.6em
$buffer-loose: $buffer * 2; // 3.2em

$buffer-relative-tight: 2% !default;
$buffer-relative: 6% !default;