alice-in-metamorpov/through-the-looking-glass/poems/for-your-amusement-part-1.typ

#let poem(content) = {
  set par(first-line-indent: 0em)

  align(center, block[
    #set align(left)
    #set block(breakable: false)
    #content
  ])
}

#poem[
  #block[
    “In winter, when the fields are white, \
    I sing this song for your delight---
  ]
]