body{
    background-color: rgba(255,255,255,0.6);
    background-image: url("../images/hexagon.jpg");
    background-blend-mode: lighten;    
    min-width: 300px;
    text-align: center;
}

#board{
    background-color: rgb(39, 39, 39);
    border-top: 5px solid skyblue;
    border-bottom: 5px solid skyblue;
    position: fixed;
    left: 50%;
    top: 50%;
    transform: translate(-50%, -50%);
}