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

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

#poem[
  #block[
    “The Queen of Hearts, she made some tarts, \
    #h(1em)All on a summer day: \
    The Knave of Hearts, he stole those tarts, \
    #h(1em)And took them quite away!”
  ]
]
