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

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

#poem[
  #block[
    #set align(center)
    #smallcaps[Jabberwocky.]
    #set align(left)
    #emph[
      'Twas brillig, and the slithy toves \
      #h(1em)Did gyre and gimble in the wabe; \
      All mimsy were the borogoves, \
      #h(2em)And the mome raths outgrabe.
    ]
  ]

  #block[
    #emph[
      “Beware the Jabberwock, my son! \
      #h(1em)The jaws that bite, the claws that catch! \
      Beware the Jubjub bird, and shun \
      #h(2em)The frumious Bandersnatch!”
    ]
  ]

  #block[
    #emph[
      He took his vorpal sword in hand: \
      #h(1em)Long time the manxome foe he sought--- \
      So rested he by the Tumtum tree, \
      #h(2em)And stood awhile in thought.
    ]
  ]

  #block[
    #emph[
      And as in uffish thought he stood, \
      #h(1em)The Jabberwock, with eyes of flame, \
      Came whiffling through the tulgey wood, \
      #h(2em)And burbled as it came!
    ]
  ]

  #block[
    #emph[
      One, two! One, two! And through and through \
      #h(1em)The vorpal blade went snicker-snack! \
      He left it dead, and with its head \
      #h(2em)He went galumphing back.
    ]
  ]

  #block[
    #emph[
      “And hast thou slain the Jabberwock? \
      #h(1em)Come to my arms, my beamish boy! \
      O frabjous day! Callooh! Callay!” \
      #h(2em)He chortled in his joy.
    ]
  ]

  #block[
    #emph[
      'Twas brillig, and the slithy toves \
      #h(1em)Did gyre and gimble in the wabe; \
      All mimsy were the borogoves, \
      #h(2em)And the mome raths outgrabe.
    ]
  ]
]