body{
    text-align: center;
    background-color: black;
    color:white;
}

#board{
    width: calc(95% - 2px);
    margin-top: 5%;
    border: 1px white solid;
    border-radius: 4px;
}

@media only screen and (min-width: 1000px) {
    #board{
        width: 1000px;
        border-radius: 8px;
    }
}