tailwind.config.js

const defaultTheme = require('tailwindcss/defaultTheme')

module.exports = {
  theme: {
    extend: {
      fontFamily: {
        sans: [
          'Cerebri Sans',
          ...defaultTheme.fontFamily.sans,
        ],
      },
      boxShadow: theme => ({
        'outline': '0 0 0 2px ' + theme('colors.indigo.500'),
      }),
      fill: theme => theme('colors'),
    },
  },
  variants: {
    fill: ['responsive', 'hover', 'focus', 'group-hover'],
    textColor: ['responsive', 'hover', 'focus', 'group-hover'],
    zIndex: ['responsive', 'focus'],
  },
  plugins: [],
}