.board{
    display: inline-block;
    width: 80vmin;
    height: 80vmin;
    margin: 10vmin calc(50% - 40vmin);
    border: solid black;
    background-color: seashell;
}
.game{
    display: inline-block;
    width: 90vmin;
    height: 90vmin;
    position: absolute;
    top: 0;
    left: 0;
    margin: 5vmin calc(50% - 45vmin);
    z-index: -1;
}

.topBorder{
    display: inline-block;
    width: 80vmin;
    height: 5vmin;
    margin-left: calc(50% - 40vmin);
}

.leftBorder{
    height: 80vmin;
    width: 5vmin;
}

.topBox{
    display: inline-block;
    height: 100%;
    text-align: center;
}
.leftBorder{
    display: inline-block;
    text-align: center;
}
    .leftBox{
    }
.rightBottom{
    display: inline-block;
}
.bottomBorder{
    display: inline-block;
    height: 5vmin;
    width: 80vmin;
    position: absolute;
    bottom: 0;
    left: 0;
    margin-left: calc(50% - 40vmin);
}
    .bottomBox{
        display: inline-block;
        text-align: center;
        transform: rotate(180deg);
        height: 100%;
    }
.rightBorder{
    display: inline-block;
    width: 5vmin;
    height: 80vmin;
    position: absolute;
    top: 0;
    margin-top: 5vmin; 
}
.rightBox{
    transform: rotate(180deg);
}
.game{
    font-size: 1.5vmin;
}