.blackjack-container {
    border: 1px solid black;
    margin: auto;
    width: 75%;
}

h2, h3 {
    text-align: center;
}


.flex-blackjack-row-1, .flex-blackjack-row-2 {
    padding: 10px; 
    border: 1px solid black;
    display: flex;
    justify-content: space-around;
    flex-wrap: wrap;
}


table, th, td{
    border: 1px solid black;
}

table{
    margin: 10px auto;
}


.flex-blackjack-row-1 div{
    width: 400px;
    height: 400px;
    border: 1px solid black;
    flex: 1;
}

.flex-blackjack-row-1{
    background: green;
}