body {
    color: rgb(61, 21, 21);
    text-shadow: 1px 1px 3px black;
    text-align: center;
    background-color: rgb(150, 219, 219);
}
table {
    margin: auto;
    border-spacing: 10px;
    user-select: none;
}
td {
    background-color: rgb(241, 249, 233);
    width: 30px;
    height: 30px;
    box-shadow: 1px 1px 3px gray;
    border-radius: 4px;
    cursor: pointer;
}
td.p1 {
    background-color: bisque;
}
td.O {
    visibility: hidden;
}
div {
    font-size: 20px;
    border-radius: 5px;
    box-shadow: 1px 1px 3px black;
    padding:5px;
    margin: 4px;
    background-color: azure;
}