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CSS

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JavaScript

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Babel includes JSX processing.

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HTML
!

CSS 

              
                @layer normalize, open-props, base, mdl, demo;

@layer demo {
  [popover] {
    padding: var(--size-4);
  }
  [popover] {
    box-shadow: var(--shadow-5);
    position: fixed;
    top: 50%;
    left: 50%;
    margin: 0;
    padding: 0;
    border: 0;
  }

  .balloon {
    cursor: pointer;
    font-size: var(--font-size-fluid-1);
    font-weight: var(--font-weight-9);
    color: var(--gray-0);
    overflow: visible;
    width: 12vmin;
    aspect-ratio: 0.8 / 1;
    height: auto;
    background: hsl(var(--hue) 50% 50% / 0.75);
    border-radius: 50% 50% 50% 50% / 45% 45% 55% 55%;
    filter: brightness(var(--brightness, 1));
    transition: filter 0.2s, transform 0.2s;
    transform: translate(-50%, -50%) translateX(calc(var(--index, 0) * 110%))
      translateY(0) scale(var(--scale, 1));
    /*animation: float calc(var(--d, 1) * 1s) calc(var(--delay, 0) * -1s) infinite linear both;*/
  }

  [popover]:hover {
    --scale: 1.2;
    --brightness: 1.2;
  }

  [popover]:open {
    animation: float calc(var(--float-speed) * 10s) forwards,
      bob calc(var(--bob-speed) * 10s) infinite ease-in-out;
  }

  @keyframes float {
    0% {
      transform: translate(-50%, -50%) translateX(calc(var(--index, 0) * 110%))
        translateY(100vh) translateY(0vh);
    }
  }

  @keyframes bob {
    50% {
      transform: translate(-50%, -50%) translateX(calc(var(--index, 0) * 110%))
        translateY(0) translateY(-25%);
    }
  }

  .balloon:before {
    content: "";
    position: absolute;
    width: 20%;
    height: 30%;
    background: blue;
    top: 8%;
    left: 16%;
    border-radius: 50%;
    transform: rotate(40deg);
    background: var(--shine);
  }

  .balloon__content {
    display: flex;
    align-items: center;
    justify-content: center;
    height: 100%;
    width: 100%;
    flex-direction: column;
    gap: var(--size-4);
    font-weight: var(--font-weight-6);
  }

  .balloon__handle {
    --chord: hsl(45, 100%, 40%);
    width: 2%;
    height: 60%;
    background: var(--chord);
    top: 100%;
    left: 50%;
    transform: translate(-50%, 0);
    position: absolute;
  }
  .balloon__handle:before,
  .balloon__handle:after {
    content: "";
    position: absolute;
    height: 5%;
    transform: translate(-50%, 0);
    border-radius: 25% / 50%;
    left: 50%;
  }

  .balloon__handle:before {
    top: 0;
    background: var(--chord);
    width: 500%;
  }

  .balloon__handle:after {
    top: 5%;
    background: var(--primary-color);
    width: 700%;
  }

  @keyframes float-up {
    from {
      transform: translate(-50%, -50%) translateX(calc(var(--index) * 125%))
        scale(calc(1 + var(--scale, 0))) translateY(100vh);
    }
  }
}

@layer base {
  :root {
    --shine: hsl(0 0% 100% / 0.75);
    --speed: 1s;
  }

  *,
  *:after,
  *:before {
    box-sizing: border-box;
  }

  body {
    display: grid;
    place-items: center;
    min-height: 100vh;
    font-family: "Google Sans", sans-serif, system-ui;
    align-content: center;
    overflow: hidden;
  }

  :where([popup]) {
    margin: auto;
    border-width: initial;
    border-style: solid;
  }
}
!

JS 

              
                const AUDIO_POP = new Audio("https://assets.codepen.io/5928893/pop.mp3");
const WORD = "Pop-up";
const START_INDEX = WORD.length / -2 + 0.5;

for (let p = 0; p < WORD.length; p++) {
  const POPUP = Object.assign(document.createElement("button"), {
    popover: "manual",
    className: "balloon",
    id: WORD.charAt(p),
    defaultOpen: true,
    title: `Pop "${WORD.charAt(p)}"`,
    innerHTML: `
      <span class="balloon__content">
        <span class="balloon__letter">${WORD.charAt(p)}</span>
        <span class="balloon__handle"></div>
      </span>
    `,
    style: `
      --index: ${START_INDEX + p};
      --hue: ${Math.random() * 359};
      --bob-speed: ${Math.random() + 0.5};
      --float-speed: ${Math.random() + 0.5};
    `
  });
  document.body.appendChild(POPUP);
  POPUP.addEventListener("click", () => {
    AUDIO_POP.currentTime = 0;
    AUDIO_POP.play();
    POPUP.hidePopover();
    Object.assign(POPUP, {
      style: `
      --index: ${START_INDEX + p};
      --hue: ${Math.random() * 359};
      --bob-speed: ${Math.random() + 0.5};
      --float-speed: ${Math.random() + 0.5};
    `
    });
    requestAnimationFrame(() => POPUP.showPopover());
  });
  // Because defaultopen does not work for some reason?
  POPUP.showPopover();
}
!
999px

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