html, body {
    width: 100%;
    height: 100%;
    margin: 0;
    padding: 0;
    overflow: hidden;
    font-family: sans-serif;
}
#Pong {
    width: 100%;
    height: 100%;
}
#topbar {
    position: fixed;
    top:20px;
    left:0;
    width: calc(100% - 20px);
}
#topbar span {
    font-size: 1.40rem;
    color:white;
}
#score {
    margin-left:15px;
    float: left;
}
#highscore {
    margin-right:15px;
    float: right;
}
#timer {
    font-size: 50px !important;
    position: absolute;
    transition: 1s;
    left:50%;
    transform: translateX(-50%);
    color:black;
}