* 겪고 있는 문제 상황을 최대한 자세하게 작성해주세요.

* 문제 해결을 위해 어떤 시도를 해보았는지 구체적으로 함께 알려주세요.

카드 코드 붙여 넣기 했는데 강의 내용처럼 col 이 안보입니다 잘못한걸 까요?

<div class="mycards">

        <div class="card-group">

            <div class="card">

                <img src="..." class="card-img-top" alt="...">

                <div class="card-body">

                    <h5 class="card-title">Card title</h5>

                    <p class="card-text">This is a wider card with supporting text below as a natural lead-in to

                        additional content. This content is a little bit longer.</p>

                    <p class="card-text"><small class="text-body-secondary">Last updated 3 mins ago</small></p>

                </div>

            </div>

            <div class="card">

                <img src="..." class="card-img-top" alt="...">

                <div class="card-body">

                    <h5 class="card-title">Card title</h5>

                    <p class="card-text">This card has supporting text below as a natural lead-in to additional content.

                    </p>

                    <p class="card-text"><small class="text-body-secondary">Last updated 3 mins ago</small></p>

                </div>

            </div>

            <div class="card">

                <img src="..." class="card-img-top" alt="...">

                <div class="card-body">

                    <h5 class="card-title">Card title</h5>

                    <p class="card-text">This is a wider card with supporting text below as a natural lead-in to

                        additional content. This card has even longer content than the first to show that equal height

                        action.</p>

                    <p class="card-text"><small class="text-body-secondary">Last updated 3 mins ago</small></p>

                </div>

            </div>

        </div>

    </div>

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