#let poem(content) = {
  set par(first-line-indent: 0em)
  
  align(center, block[
    #set align(left)
    #set block(breakable: false)
    #content
  ])
}

#poem[
  #block[
    Child of the pure unclouded brow \
    #h(1em)And dreaming eyes of wonder! \
    Though time be fleet, and I and thou \
    #h(1em)Are half a life asunder, \
    Thy loving smile will surely hail \
    The love-gift of a fairy-tale.
  ]
  
  #block[
    I have not seen thy sunny face, \
    #h(1em)Nor heard thy silver laughter; \
    No thought of me shall find a place \
    #h(1em)In thy young life's hereafter--- \
    Enough that now thou wilt not fail \
    To listen to my fairy-tale.
  ]

  #block[
    A tale begun in other days, \
    #h(1em)When summer suns were glowing--- \
    A simple chime, that served to time \
    #h(1em)The rhythm of oar rowing--- \
    Whose echoes live in memory yet, \
    Though envious years would say ‘forget.'
  ]

  #block[
    Come, hearken then, ere voice of dread. \
    #h(1em)With bitter tidings laden, \
    Shall summon to unwelcome bed \
    #h(1em)A melancholy maiden! \
    We are but older children, dear, \
    Who fret to find our bedtime near.
  ]

  #block[
    Without, the frost, the blinding snow. \
    #h(1em)The storm-wind's moody madness--- \
    Within, the firelight's ruddy glow, \
    #h(1em)And childhood's nest of gladness. \
    The magic words shall hold thee fast: \
    Thou shalt not heed the raving blast.
  ]

  #block[
    And though the shadow of a sigh \
    #h(1em)May tremble through the story, \
    For ‘happy summer days' gone by, \
    #h(1em)And vanish'd summer glory--- \
    It shall not touch with breath of bale \
    The pleasance of our fairy-tale.
  ]
]