.card-group {
    gap: 10px;
}

div#mydiv {
    /* display: flex; */
    justify-content: center;
    margin-top: 30px;
}


.card {
    display: flex;
    flex-direction: column;
}

.card .content {
    display: flex;
    flex-flow: row wrap;
    flex: 1 1 auto;
}

.card-group {
    display: flex;
    flex-flow: row wrap;
    flex: 1 1 auto;
}