Javascript Code: Range Element Effect

Range bars are common in the sites which let users adjust somethings magnitude. So why not to make it more beautiful and stylish. See the following example!

<!-- this script got from www.javascriptfreecode.com - Coded by: Krishna Eydat -->
<style>
.range-wrap {
  position: relative;
  width: 100%;
  padding: 1.5em 0; /*  Giving more room for hover  */
  max-width: 400px;
}

/* Custom Bar */
.range-wrap::before {
  content: "";
  background: linear-gradient(to right, #0145b8, #00e5e0, #00f25e);
  width: 100%;
  height: 8px;
  display: block;
  position: absolute;
  border-radius: 4px;
  top: 50%;
  transform: translateY(-50%);
  transition: height 100ms ease;
}

.range-wrap:hover::before {
  height: 10px;
}

/*  Hide Original */
.range {
  width: 100%;
  cursor: pointer;
  opacity: 0;
}

.bubble {
  background: white;
  border: 3px solid #cbd2da;
  position: absolute;
  border-radius: 50%;
  width: 2rem;
  height: 2rem;
  top: 50%;
  transform: translateY(-50%);
  pointer-events: none; /* Remove pointer events on Bubble so user can click on the actual thumb beaneath it!  */
  color: transparent;
  display: grid;
  place-items: center; /*  Place the number on the center  */
  font-weight: bold;
  transition: color 100ms ease, transform 100ms ease;
  user-select: none; /*  Prevent Accidentally highlighting the number while sliding the cursor  */
}

.range-wrap:hover .bubble,
.range-wrap:focus .bubble {
  color: black;
  transform: translateY(-50%) scale(1.5);
  padding: 0.1em;
}

body {
  font-family: monospace;
  height: 100%;
  display: grid;
  grid-gap: 5rem;
  place-items: center;
  padding: 10%;
}
</style>

<div class="range-wrap">
<input type="range" class="range" min="20" max="940">
<output class="bubble"></output>
</div>

<script>
// Forked from Chris Coyier's pen : https://codepen.io/chriscoyier/pen/eYNQyPe -->
const allRanges = document.querySelectorAll(".range-wrap");
allRanges.forEach(wrap => {
  const range = wrap.querySelector(".range");
  const bubble = wrap.querySelector(".bubble");

  range.addEventListener("input", () => {
    setBubble(range, bubble);
  });

  // setting bubble on DOM load
  setBubble(range, bubble);
});

function setBubble(range, bubble) {
  const val = range.value;

  const min = range.min || 0;
  const max = range.max || 100;

  const offset = Number((val - min) * 100 / (max - min));

  bubble.textContent = val;

  // yes, 14px is a magic number
  bubble.style.left = `calc(${offset}% - 14px)`;
}
</script><a target="_blank" href="https://www.javascriptfreecode.com/" style="font-size: 8pt; text-decoration: none;font-family:Tahoma">Javascript Free Code</a>

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