canvas {
    position:absolute;
    left:20px;
    top:60px;
}
#aliensCanvas {
    background-color:black;
}
#gunraysCanvas {
    background-color:transparent;
}
#scoreDiv, #alivesDiv, #levelDiv {
    position:absolute;
    top:100px;
    left:650px;
}
#score, #alives, #level {
    display:block;
    width:90px;
    height:30px;
    border:2px solid #333;
    border-radius:7px 7px 7px;
    text-align:center;
    font-size: 25px;
    line-height:30px;
}
#scoreDiv {
    top:160px;
}
#alivesDiv {
    top:320px;
}
h2 {
    margin:0;
}