body {

    font-family: 'Times New Roman', Times, serif;
    text-align: center;
}
#board {
    height: 540px; 
    width: 630px;

    background-color: black;
    border: 10px solid gray;

    margin: 0 auto;
    display: flex;
    flex-wrap: wrap;
}

.tile {
    height: 70px;
    width: 70px;
    margin: 5px;

    background-color: white;
    border-radius: 0%;
    border: 5px solid gray;
}

.red-turn {
    background-color: red; 
}

.yellow-turn{
    background-color: yellow;
}

#turn-reference { 
    position: fixed; 
    bottom: 20px;
    right: 20px;
    font-size: 18px;
    font-weight: bold;
    padding: 10px;
    background-color: white;
    border: 2px solid black;
    border-radius: 5px;
    box-shadow: 0 2px 5px black; 
}