body {
    font-family:'Courier New', Courier, monospace;
    text-align: center;
    background: #000;
}

.wrap {
    max-width: 540px;
    margin: auto;
}
.game {
    position: relative;
    height: 0;
    padding-top: 177.777778%;
}
#board {
    /* background-color: skyblue; */
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: url("./flappybirdbg.png");
    user-select: none;
}