HTML Code

<!DOCTYPE html>
<html>
<head>
  <title>CSS :in-range Slider Example</title>
  <style>
    body {
      font-family: system-ui, sans-serif;
      padding: 1.5rem;
    }

    label {
      display: block;
      font-weight: 600;
      font-size: 0.875rem;
      margin-bottom: 0.5rem;
      color: #334155;
    }

    input[type="range"] {
      width: 100%;
      max-width: 18rem;
    }

    input[type="range"]:in-range {
      accent-color: #16a34a;
    }

    input[type="range"]:out-of-range {
      accent-color: #dc2626;
    }

    output {
      display: block;
      margin-top: 0.5rem;
      font-size: 0.875rem;
      color: #475569;
    }
  </style>
</head>
<body>
  <label for="volume">Volume (0–100)</label>
  <input type="range" id="volume" min="0" max="100" value="75"
    oninput="this.nextElementSibling.value = this.value">
  <output>75</output>
</body>
</html>

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CSS :in-range Selector - Range Slider