スクロール連動マーカー下線

<div class="d02-08-03-stage">
          <span class="d02-08-03-hint">↓ scroll</span>
          <div class="d02-08-03-scroll">
            <div class="d02-08-03-pad-top"></div>
            <p class="d02-08-03-text">私たちが大切にしているのは、<span class="d02-08-03-mark">誠実な対応</span>と<span class="d02-08-03-mark">圧倒的なスピード</span>、そして<span class="d02-08-03-mark">お客様に寄り添う姿勢</span>です。この3つを軸に、日々サービスを磨き続けています。</p>
            <div class="d02-08-03-pad-bottom"></div>
          </div>
        </div>

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