ge" width="40" height="40">
      </label>
    </div>
    <div id="preview"></div>
    <div id="controls">
      <div class="range-group">
        <label>Speed <span>5</span></label>
        <input type="range" id="speed" min="1" max="10" step="0.1" value="5" />
      </div>
      <div class="range-group">
        <label>Intensity <span>0.03</span></label>
        <input type="range" id="intensity" min="0.01" max="0.1" step="0.001" value="0.03" />
      </div>
      <div class="range-group">
        <label>