<div class="container"
        <div class="row"> 
            <div class="col">
                Insert card 1 here
            </div>
            <div class="col">
                Insert card 2 here
            </div>
            <div class="col">
                Insert card 3 here
            </div>
            <div class="col">
                Insert card 4 here
            </div>
            <div class="col">
                Insert card 5 here
            </div>
        </div>
    </div>

同样地，根据你的需要调整类列。如果你想显示4张牌，请删除一个类列。