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

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

#poem[
  #block[
    “The sun was shining on the sea, \
    #h(1em)Shining with all his might: \
    He did his very best to make \
    #h(1em)The billows smooth and bright--- \
    And this was odd, because it was \
    #h(1em)The middle of the night.
  ]

  #block[
    The moon was shining sulkily, \
    #h(1em)Because she thought the sun \
    Had got no business to be there \
    #h(1em)After the day was done--- \
    ‘It's very rude of him,' she said, \
    #h(1em)‘To come and spoil the fun!'
  ]

  #block[
    The sea was wet as wet could be, \
    #h(1em)The sands were dry as dry. \
    You could not see a cloud, because \
    #h(1em)No cloud was in the sky: \
    No birds were flying over head--- \
    #h(1em)There were no birds to fly.
  ]

  #block[
    The Walrus and the Carpenter \
    #h(1em)Were walking close at hand; \
    They wept like anything to see \
    #h(1em)Such quantities of sand: \
    ‘If this were only cleared away,' \
    #h(1em)They said, ‘it #emph[would] be grand!'
  ]

  #block[
    ‘If seven maids with seven mops \
    #h(1em)Swept it for half a year, \
    Do you suppose,' the Walrus said, \
    #h(1em)‘That they could get it clear?' \
    ‘I doubt it,' said the Carpenter, \
    #h(1em)And shed a bitter tear.
  ]

  #block[
    ‘O Oysters, come and walk with us!' \
    #h(1em)The Walrus did beseech. \
    ‘A pleasant walk, a pleasant talk, \
    #h(1em)Along the briny beach: \
    We cannot do with more than four, \
    #h(1em)To give a hand to each.'
  ]

  #block[
    The eldest Oyster looked at him. \
    #h(1em)But never a word he said: \
    The eldest Oyster winked his eye, \
    #h(1em)And shook his heavy head--- \
    Meaning to say he did not choose \
    #h(1em)To leave the oyster-bed.
  ]

  #block[
    But four young oysters hurried up, \
    #h(1em)All eager for the treat: \
    Their coats were brushed, their faces washed, \
    #h(1em)Their shoes were clean and neat--- \
    And this was odd, because, you know, \
    #h(1em)They hadn't any feet.
  ]

  #block[
    ‘O Oysters, come and walk with us!' \
    #h(1em)The Walrus did beseech. \
    ‘A pleasant walk, a pleasant talk, \
    #h(1em)Along the briny beach: \
    We cannot do with more than four, \
    #h(1em)To give a hand to each.'
  ]

  #block[
    Four other Oysters followed them, \
    #h(1em)And yet another four; \
    And thick and fast they came at last, \
    #h(1em)And more, and more, and more--- \
    All hopping through the frothy waves, \
    #h(1em)And scrambling to the shore.
  ]

  #block[
    The Walrus and the Carpenter \
    #h(1em)Walked on a mile or so, \
    And then they rested on a rock \
    #h(1em)Conveniently low: \
    And all the little Oysters stood \
    #h(1em)And waited in a row.
  ]

  #block[
    ‘The time has come,' the Walrus said, \
    #h(1em)‘To talk of many things: \
    Of shoes---and ships---and sealing-wax--- \
    #h(1em)Of cabbages---and kings--- \
    And why the sea is boiling hot--- \
    #h(1em)And whether pigs have wings.'
  ]

  #block[
    ‘But wait a bit,' the Oysters cried, \
    #h(1em)‘Before we have our chat; \
    For some of us are out of breath, \
    #h(1em)And all of us are fat!' \
    ‘No hurry!' said the Carpenter. \
    #h(1em)They thanked him much for that.
  ]

  #block[
    ‘A loaf of bread,' the Walrus said, \
    #h(1em)‘Is what we chiefly need: \
    Pepper and vinegar besides \
    #h(1em)Are very good indeed--- \
    Now if you're ready Oysters dear, \
    #h(1em)We can begin to feed.'
  ]

  #block[
    ‘But not on us!' the Oysters cried, \
    #h(1em)Turning a little blue, \
    ‘After such kindness, that would be \
    #h(1em)A dismal thing to do!' \
    ‘The night is fine,' the Walrus said \
    #h(1em)‘Do you admire the view?
  ]

  #block[
    ‘It was so kind of you to come! \
    #h(1em)And you are very nice!' \
    The Carpenter said nothing but \
    #h(1em)‘Cut us another slice: \
    I wish you were not quite so deaf--- \
    #h(1em)I've had to ask you twice!'
  ]

  #block[
    ‘It seems a shame,' the Walrus said, \
    #h(1em)‘To play them such a trick, \
    After we've brought them out so far, \
    #h(1em)And made them trot so quick!' \
    The Carpenter said nothing but \
    #h(1em)‘The butter's spread too thick!'
  ]

  #block[
    ‘I weep for you,' the Walrus said. \
    #h(1em)‘I deeply sympathize.' \
    With sobs and tears he sorted out \
    #h(1em)Those of the largest size. \
    Holding his pocket handkerchief \
    #h(1em)Before his streaming eyes.
  ]

  #block[
    ‘O Oysters,' said the Carpenter. \
    #h(1em)‘You've had a pleasant run! \
    Shall we be trotting home again?' \
    #h(1em)But answer came there none--- \
    And that was scarcely odd, because \
    #h(1em)They'd eaten every one.”
  ]
]