:root{
/* Nine steps. Every one is a clear jump from the last — a scale you can hold in
   your head beats a scale that can express any number. 20, 40, 80 and 128 were
   removed because they sat too close to their neighbours to mean anything. */
--space-0:0;
--space-1:4px;
--space-2:8px;
--space-3:12px;
--space-4:16px;
--space-6:24px;
--space-8:32px;
--space-12:48px;
--space-16:64px;
--space-24:96px;

--gutter-inline:24px;
--gutter-inline-lg:56px;
--section-y:96px;
--section-y-sm:56px;

--width-content:1180px;
--width-prose:680px;
--width-narrow:480px;
}