table {
    background-color: blue
}

td {
    background-color:white;
    width:5em;
    height:5em;
    border-radius: 100%;
    border: solid 0.2em blue
}
.player1 {
    background-color: red;
}

.player2 {
    background-color: yellow;
}
.winning1 {
    box-shadow: 5px 5px 5px 5px red;
}
.winning2 {
    box-shadow: 5px 5px 5px 5px yellow;
}