カラーフラッシュ遷移

<div class="d08-04-09-stage">
          <div class="d08-04-09-page d08-04-09-a">
            <strong>ランディング</strong>
            <p>キャンペーンLP</p>
          </div>
          <div class="d08-04-09-page d08-04-09-b">
            <strong>申込みフォーム</strong>
            <p>お申し込みはこちら</p>
          </div>
          <div class="d08-04-09-flash"></div>
          <button type="button" class="d08-04-09-btn">申し込む</button>
        </div>

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