问2列、不同高度的水平卡片

EN

    <div class="row">
        <div class="col-12 mt-3">
            <div class="card">
                <div class="card-horizontal">
                    <div class="img-square-wrapper">
                        <img class="" src="http://via.placeholder.com/300x180" alt="Card image cap">
                    </div>
                    <div class="card-body">
                        <h4 class="card-title">Card title</h4>
                        <p class="card-text">Some quick example text to build on the card title and make up the bulk of the card's content.</p>
                        <button>Learn More</button>
                    </div>
                </div>
            </div>
        </div>
    </div>
</div>

.card-horizontal {
    display: flex;
    flex: 1 1 auto;
}