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

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

#poem[
  #block[
    “How doth the little crocodile \
    #h(1em)Improve his shining tail, \
    And pour the waters of the Nile \
    #h(1em)On every golden scale!
  ]

  #block[
    “How cheerfully he seems to grin, \
    #h(1em)How neatly spread his claws, \
    And welcome little fishes in \
    #h(1em)With gently smiling jaws!”
  ]
]