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

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

#poem[
  #block[
    “Then fill up the glasses as quick as you can, \
    And sprinkle the table with buttons and bran: \
    Put cats in the coffee, and mice in the tea--- \
    And welcome also/Queen Y/n with thirty-times-three!”
  ]
]