CSS Party

css-party.markdown

CSS Party

A Pen by David East on CodePen.

License.

index.html

<main>
  <article>
    <h1 split-by="letter" letter-animation="breath">2024</h1>
    <h2>The year of CSS</h2>
  </article>
  <section>
    <div>

      <span>Party</span>
      <span>Chill</span>
      <input min="100" max="2400" type="range" />
    </div>
  </section>
</main>

script.js

const slider = document.querySelector('input[type="range"]');
const root = document.querySelector("article");

const span = (text, index) => {
  const node = document.createElement("span");

  node.textContent = text;
  node.style.setProperty("--index", index);

  return node;
};

export const byLetter = (text) => [...text].map(span);

export const byWord = (text) => text.split(" ").map(span);

const { matches: motionOK } = window.matchMedia(
  "(prefers-reduced-motion: no-preference)"
);

if (motionOK) {
  const splitTargets = document.querySelectorAll("[split-by]");

  splitTargets.forEach((node) => {
    const type = node.getAttribute("split-by");
    let nodes = null;

    if (type === "letter") nodes = byLetter(node.innerText);
    else if (type === "word") nodes = byWord(node.innerText);

    if (nodes) node.firstChild.replaceWith(...nodes);
  });
}

function onInput() {
  const value = slider.value;
  root.style.setProperty("--speed", `${value}ms`);
}

slider.addEventListener("input", debounce(onInput, 10));

function debounce(func, wait) {
  let timeoutId;
  return function () {
    const context = this;
    const args = arguments;
    clearTimeout(timeoutId);
    timeoutId = setTimeout(() => {
      func.apply(context, args);
    }, wait);
  };
}

scripts

<script src="https://unpkg.com/splitting/dist/splitting.min.js"></script>

style.css

html,
body,
main {
  --font: "skolar-sans-latin", sans-serif;
  --really-green: oklch(88.14% 0.203 158.82);
  --green: oklch(78.59% 0.18 159.1);
  --black: oklch(22.21% 0 0);
  --gray: oklch(83.9% 0 0);
  --speed: 1200ms;

  height: 100%;
  font-family: var(--font);
  background-color: var(--black);
  color: var(--gray);

  & * {
    font-family: inherit;
  }
}

main {
  display: grid;
  place-content: center;
  place-items: center;
  text-align: center;
  gap: 88px;

  & article {
    display: grid;
    gap: 52px;
  }

  & h1 {
    color: var(--green);
    font-size: 14vw;
    font-weight: 900;
  }

  & h2 {
    font-size: 4.5vw;
    text-transform: uppercase;
    letter-spacing: 0.025ch;
  }
}

*[letter-animation="breath"] {
  & > span {
    display: inline-block;
    white-space: break-spaces;
  }

  & > span {
    animation: breath calc(var(--speed)) ease calc(var(--index) * 100 * 1ms)
      infinite alternate;
  }
}

section {
  width: 100%;
  display: grid;
  place-content: center;
  place-items: center;

  & div {
    width: 50vw;

    & span {
      text-transform: uppercase;
      font-weight: bold;
      letter-spacing: 0.025ch;
      position: relative;
      margin-block-end: 8px;
    }

    & span:first-of-type {
      float: left;
      left: -12px;
    }

    & span:last-of-type {
      float: right;
      right: -12px;
    }
  }

  & input[type="range"] {
    width: 100%;
  }
}

input[type="range"] {
  -webkit-appearance: none;
  appearance: none;
  background: transparent;
  cursor: pointer;
}

input[type="range"]::-webkit-slider-runnable-track {
  background: var(--green);
  height: 0.5rem;
  border-radius: 12px;
}

input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none; /* Override default look */
  appearance: none;
  margin-top: -12px;
  background-color: oklch(22.21% 0 0);
  border: 1px solid oklch(38% 0 0);
  border-radius: 8px;
  height: 2rem;
  width: 1.25rem;
}

@keyframes breath {
  from {
    animation-timing-function: ease-out;
  }
  to {
    transform: scale(1.25) translateY(-5px) perspective(1px);
    text-shadow: 0 0 20px var(--really-green);
    animation-timing-function: ease-in-out;
  }
}

styles

<link href="https://use.typekit.net/htw6kjt.css" rel="stylesheet" />