.container-1{
    width: 75%;
    border: 1px solid black;
    text-align: center;
    margin: 50px auto;
}

.flex-blackjack-row-1, .flex-blackjack-row-2, .flex-blackjack-row-3{
    display: flex;
    border-top: 1px solid black;
    border-bottom: 1px solid black;
    flex-flow: row;
    justify-content: space-around;
    flex-wrap: wrap;
}

.flex-blackjack-row-2 div{
    margin: 10px;
}

.flex-blackjack-row-1, .flex-blackjack-row-2{
    background: url('https://img.freepik.com/free-photo/green-poker-background_87414-2508.jpg?size=626&ext=jpg') content-box;
    color: white;
}

table{
    margin-top: 10px;
    margin-bottom: 10px;
}

th{
    background-color: silver;
}

table, th, td{
    border: 1px solid black;
    padding: 5px;
    text-align: center;
}

.flex-blackjack-row-1 div{
    border: 1px solid black;
    flex: 1;
    text-align: center;
    height: 400px;
    padding: 10px;
}