body{
    display: flex;
    justify-content: center;
    align-items: center;
}

.row{
    display: flex;
    justify-content: center;
    align-items: center;
}

.row .card{
    margin: 10px;
    padding: 10px;
    border: 1px solid #ccc;
    border-radius: 5px;
    box-shadow: 0 0 10px rgba(0,0,0,0.1);
}