title: Tailwindcss customize width with name
body: <p>I want to add custom items in tailwindcss width. I found out that you have to use spacing.
  In the colors customisation you can use multiple objects with names. Is it possible to do this with spacing as well? When I try to do it, nothing happens in the browser...</p>
  
  <pre><code>spacing: {
          // the commented lines work as excepted
          // 'cta-slogan': '23.813rem',
          // 'services-item': '28.5rem',
  
          // these don't work..
          cta: { slogan: '23.813rem' },
          services: { item: '28.5rem' },
        },
  </code></pre>