export default function() {
  return function({ addUtilities, variants, target }) {
    addUtilities(
      {
        '.block': {
          display: 'block',
        },
        '.inline-block': {
          display: 'inline-block',
        },
        '.inline': {
          display: 'inline',
        },
        '.flex': {
          display: 'flex',
        },
        '.inline-flex': {
          display: 'inline-flex',
        },
        '.table': {
          display: 'table',
        },
        '.table-caption': {
          display: 'table-caption',
        },
        '.table-cell': {
          display: 'table-cell',
        },
        '.table-column': {
          display: 'table-column',
        },
        '.table-column-group': {
          display: 'table-column-group',
        },
        '.table-footer-group': {
          display: 'table-footer-group',
        },
        '.table-header-group': {
          display: 'table-header-group',
        },
        '.table-row-group': {
          display: 'table-row-group',
        },
        '.table-row': {
          display: 'table-row',
        },
        ...(target('display') === 'ie11'
          ? {}
          : {
              '.flow-root': {
                display: 'flow-root',
              },
              '.grid': {
                display: 'grid',
              },
              '.inline-grid': {
                display: 'inline-grid',
              },
            }),
        '.hidden': {
          display: 'none',
        },
      },
      variants('display')
    )
  }
}

@@ -154,32 +154,97 @@
 ck',%0A        %7D,%0A
+        '.contents': %7B%0A          display: 'contents',%0A        %7D,%0A
         '.inline

Update display.js