zig Tryit Editor

<!DOCTYPE html>
<html>
<head>
<meta name="viewport" content="width=device-width, initial-scale=1">
<style>
.slidecontainer {
  width: 100%;
}
.slider {
  -webkit-appearance: none;
  width: 100%;
  height: 25px;
  background: #d3d3d3;
  outline: none;
  opacity: 0.7;
  -webkit-transition: .2s;
  transition: opacity .2s;
}
.slider:hover {
  opacity: 1;
}
.slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 25px;
  height: 25px;
  background: #04AA6D;
  cursor: pointer;
}
.slider::-moz-range-thumb {
  width: 25px;
  height: 25px;
  background: #04AA6D;
  cursor: pointer;
}
</style>
</head>
<body>
<h1>Custom Range Slider</h1>
<p>Drag the slider to display the current value.</p>
<div class="slidecontainer">
  <input type="range" min="1" max="100" value="50" class="slider" id="myRange">
  <p>Value: <span id="demo"></span></p>
</div>
<script>
  var slider = document.getElementById("myRange");
  var output = document.getElementById("demo");
  output.innerHTML = slider.value;
  slider.oninput = function () {
    output.innerHTML = this.value;
  }
</script>
</body>

</html>