JSFiddle - React, Tailwind, and code Playground

HTML

<input type="range" min="0" max="100" value="12" class="slider" id="lower">
<input type="range" min="0" max="100" value="100" class="slider" id="higher">

CSS

.slider {
    -webkit-appearance: none;
    width: 90%;
    height: 25px;
    position: absolute;
    background: #a4a4a4;
    outline: none;
  }

  .slider input {
    pointer-events: none;
    position: absolute;
    overflow: hidden;
    left: 25%;
    top: 15px;
    width: 50%;
    outline: none;
    height: 18px;
    margin: 0;
    padding: 0;
  }

  .slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 35px;
    height: 35px;
    background: #ea4550;
    cursor: pointer;
    pointer-events: all;
    position: relative;
    z-index: 1;
    outline: 0;
  }

  .slider::-moz-range-thumb {
    width: 20px;
    height: 20px;
    background: #ea4550;
    cursor: pointer;
    pointer-events: all;
    position: relative;
    z-index: 10;
    -moz-appearance: none;
    width: 9px;
  }

  .slider input::-moz-range-track {
    position: relative;
    z-index: -1;
    border: 0;
  }

  .slider input:last-of-type::-moz-range-track {
    -moz-appearance: none;
    background: none transparent;
    border: 0;
  }

  .slider input[type=range]::-moz-focus-outer {
    border: 0;
  }

JavaScript

var lower = document.getElementById('lower'),
  higher = document.getElementById('higher');

higher.oninput = higher.onchange = lower.oninput = lower.onchange = function(event) {
  console.log(event.target.value);
}