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HTML

              
                <main>
  <h1>Basheau Poetry</h1>

  <div class="waves">
    <div id="poem">
      <div id="topLines" class="lines"></div>
      <div id="midLines" class="lines"></div>
      <div id="botLines" class="lines"></div>
    </div>
  </div>

  <img id="basho" alt="Mastuo Basho" src="https://pata.physics.wtf/static/images/basheau/basho.png">
  <img id="queneau" alt="Raymond Queneau" src="https://pata.physics.wtf/static/images/basheau/queneau.png">

  <p>Prototype for <a href="https://pata.physics.wtf/basheau">pata.physics.wtf/basheau</a>.</p>
</main>
              
            
!

CSS

              
                html { --width: 100vw }
* { box-sizing: border-box }
body { color: #FFFFFF; background: #38423B; margin: 0; padding: 10px 0 }
h1, p { margin: 16px; text-align: center }
a { color: #FFFFFF }
main { position: relative }

.waves { 
  display: flex; align-items: center; justify-content: center; 
  padding: 48px 0; margin: 32px 0;
  background-image: url('data:image/svg+xml,%3Csvg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 56 28" width="56" height="28"%3E%3Cpath fill="%239C92AC" fill-opacity="0.4" d="M56 26v2h-7.75c2.3-1.27 4.94-2 7.75-2zm-26 2a2 2 0 1 0-4 0h-4.09A25.98 25.98 0 0 0 0 16v-2c.67 0 1.34.02 2 .07V14a2 2 0 0 0-2-2v-2a4 4 0 0 1 3.98 3.6 28.09 28.09 0 0 1 2.8-3.86A8 8 0 0 0 0 6V4a9.99 9.99 0 0 1 8.17 4.23c.94-.95 1.96-1.83 3.03-2.63A13.98 13.98 0 0 0 0 0h7.75c2 1.1 3.73 2.63 5.1 4.45 1.12-.72 2.3-1.37 3.53-1.93A20.1 20.1 0 0 0 14.28 0h2.7c.45.56.88 1.14 1.29 1.74 1.3-.48 2.63-.87 4-1.15-.11-.2-.23-.4-.36-.59H26v.07a28.4 28.4 0 0 1 4 0V0h4.09l-.37.59c1.38.28 2.72.67 4.01 1.15.4-.6.84-1.18 1.3-1.74h2.69a20.1 20.1 0 0 0-2.1 2.52c1.23.56 2.41 1.2 3.54 1.93A16.08 16.08 0 0 1 48.25 0H56c-4.58 0-8.65 2.2-11.2 5.6 1.07.8 2.09 1.68 3.03 2.63A9.99 9.99 0 0 1 56 4v2a8 8 0 0 0-6.77 3.74c1.03 1.2 1.97 2.5 2.79 3.86A4 4 0 0 1 56 10v2a2 2 0 0 0-2 2.07 28.4 28.4 0 0 1 2-.07v2c-9.2 0-17.3 4.78-21.91 12H30zM7.75 28H0v-2c2.81 0 5.46.73 7.75 2zM56 20v2c-5.6 0-10.65 2.3-14.28 6h-2.7c4.04-4.89 10.15-8 16.98-8zm-39.03 8h-2.69C10.65 24.3 5.6 22 0 22v-2c6.83 0 12.94 3.11 16.97 8zm15.01-.4a28.09 28.09 0 0 1 2.8-3.86 8 8 0 0 0-13.55 0c1.03 1.2 1.97 2.5 2.79 3.86a4 4 0 0 1 7.96 0zm14.29-11.86c1.3-.48 2.63-.87 4-1.15a25.99 25.99 0 0 0-44.55 0c1.38.28 2.72.67 4.01 1.15a21.98 21.98 0 0 1 36.54 0zm-5.43 2.71c1.13-.72 2.3-1.37 3.54-1.93a19.98 19.98 0 0 0-32.76 0c1.23.56 2.41 1.2 3.54 1.93a15.98 15.98 0 0 1 25.68 0zm-4.67 3.78c.94-.95 1.96-1.83 3.03-2.63a13.98 13.98 0 0 0-22.4 0c1.07.8 2.09 1.68 3.03 2.63a9.99 9.99 0 0 1 16.34 0z"%3E%3C/path%3E%3C/svg%3E') }

#basho, #queneau { 
  max-height: 90px; object-fit: cover; 
  filter: grayscale(80%); z-index: 1;
  position: absolute; top: -22px;
}
#basho { transform: scale(-1,1); left: 0 }
#queneau { right: 0 }

#poem { 
  color: #2D2D2A; background: #FFFFFF; 
  padding: 30px; 
  width: var(--width);
  align-self: center;
  position: relative
}

#poem img[id$="Left"], #poem img[id$="Right"] { z-index: 2;
  position: absolute; cursor: pointer; height: 40px; width: 40px }
#poem img[id$="Left"]:hover, #poem img[id$="Right"]:hover { filter: hue-rotate(200deg) }
#topLinesLeft { top: 45px; left: 20px }
#topLinesRight { top: 45px; right: 20px }
#midLinesLeft { top: 95px; left: 20px }
#midLinesRight { top: 95px; right: 20px }
#botLinesLeft { top: 145px; left: 20px }
#botLinesRight { top: 145px; right: 20px }
.disable { filter: blur(2px) opacity(25%) }
#poem img.disable:hover { filter: blur(2px) opacity(25%) hue-rotate(200deg); cursor: default }

.lines { white-space: nowrap; margin: 16px 0; overflow-x: hidden }

.line {
  display: inline-block;
  --lineWidth: calc( var(--width) - 80px);
  width: var(--lineWidth);
  margin: 0 calc( ( var(--width) - var(--lineWidth) - 60px ) / 2 );
  padding: 8px 0;
  text-align: center;
}

@media (min-width: 500px) {
  html { --width: 400px }
  body { margin: 0; padding: 10px 30px }
  .waves { padding: 48px; margin: 32px 0 }
  #poem { padding: 30px }
}

@media (min-width: 650px) {
  #basho, #queneau { max-height: 200px }
  #basho { top: 180px; left: 20px }
  #queneau { top: 180px; right: 20px }
}

@media (min-width: 850px) {
  .waves { padding-bottom: 120px }
  #basho, #queneau { max-height: 400px }
  #basho { top: 110px; left: 20px }
  #queneau { top: 110px; right: 20px }
}

@media (min-width: 1050px) {
  main { max-width: 1000px; margin: 0 auto }
  .waves { padding-bottom: 170px }
  #basho, #queneau { height: 500px }
  #basho { top: 84px; left: 30px }
  #queneau { top: 84px; right: 30px }
}
              
            
!

JS

              
                const topChoices = [
  "Spring come - New Year's", "Spring night,", "How terrible", "Over skylark's song", "Search carefully - ", "Aged - eating", "Cherry Blossoms", "First winter rain - ", "How quiet - "
];
const midChoices = [
  "a monkey's mask", "feeling broody", "with spring", "birds shriek,", "soars", "where behind the", "I'd sing like", "at the gate", "lights", "I plod on,", "clam torn from shell,", "the wood"
];
const botChoices = [
  "from late autumn.", "blossom dawn.", "fish eyes blink tears.", "snake-eater.", "drying on the porch.", "cherry flakes falling.", "sprinkled with cherry petals.", "of years past.", "a shapherd's purse.", "pierces rock.", "I follow autumn.", "Traveller, my name."
];

const tops = document.getElementById("topLines");
const mids = document.getElementById("midLines");
const bots = document.getElementById("botLines");

topChoices.forEach( t => {
  let line = document.createElement("span");
  let text = document.createTextNode(t);
  line.classList.add("line");
  line.appendChild(text);
  tops.appendChild(line);
});
midChoices.forEach( m => {
  let line = document.createElement("span");
  let text = document.createTextNode(m);
  line.classList.add("line");
  line.appendChild(text);
  mids.appendChild(line);
});
botChoices.forEach( b => {
  let line = document.createElement("span");
  let text = document.createTextNode(b);
  line.classList.add("line");
  line.appendChild(text);
  bots.appendChild(line);
});

[tops,mids,bots].forEach( row => {
  row.insertAdjacentHTML("beforebegin", 
    `<img id="${row.id + "Left"}" class="disable" src="https://pata.physics.wtf/static/images/basheau/cheveron-left.svg" width="40" height="40">`);
  row.insertAdjacentHTML("afterend", 
    `<img id="${row.id + "Right"}" src="https://pata.physics.wtf/static/images/basheau/cheveron-right.svg" width="40" height="40">`);
});

const lefties = document.querySelectorAll("[id$=Left]");
lefties.forEach(l => l.addEventListener("click", () => {
  const sib = l.nextElementSibling;
  const righty = sib.nextElementSibling;
  if ( sib.scrollLeft === sib.clientWidth ) l.classList.add("disable");
  sib.scrollBy({ top: 0, left: -sib.clientWidth, behavior: 'smooth' });
  righty.classList.remove("disable");
}));
const righties = document.querySelectorAll("[id$=Right]");
righties.forEach(r => r.addEventListener("click", () => {
  const sib = r.previousElementSibling;
  const lefty = sib.previousElementSibling;
  if ( sib.scrollLeft === (sib.scrollWidth - (sib.clientWidth * 2)) ) r.classList.add("disable");
  sib.scrollBy({ top: 0, left: sib.clientWidth, behavior: 'smooth' });
  lefty.classList.remove("disable");
}));
              
            
!
999px

Console