グラデーションボーダーカード

<div class="card05-01-06">
          <div class="in05-01-06">
            <h4>会員限定コンテンツ</h4>
            <p>グラデーションの枠が回転し続けて視線を集めます。</p>
            <span class="btn05-01-06">詳しく見る</span>
          </div>
        </div>

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