html,body {
    background-color: #222;
    color: white;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100%;
    margin: 0;
}
.game {
    width: 500px;
    height: 500px;
    position: relative;
    border: solid 5px white;
}
.game .board {
    background-color: #FFDD40;
}
.game .ball {
    background-color: white;
}
.game .info {
    width: 100%;
    height: 100%;
    position: absolute;
    left: 0;
    top: 0;
    background-color: #222;
    color: white;
    display: flex;
    justify-content: center;
    align-items: center;
    flex-direction: column;
}
.game .grade {
    padding: 10px;
}