html,
body {
    width: 100%;
    height: 100%;
    margin: 0;
    overflow: hidden;
    background: #000;
    font-size: 12;
    font-family: 'Press Start 2P', cursive;
    line-height: 20px;
}
#UI {
    color: #fff;
    text-align: center;
    height: 50px;
}
#UI div {
    width: 200px;
    float: right;
    padding-top: 20px;
    text-align: left;
}

#canvas {
    border: 0;
    top: 0;
    bottom: 100;
    left: 0;
    right: 0;
    margin: 0 auto;
}
#welcome {
    display: none;
    width: 600px;
    height: 170px;
    position: absolute;
    margin: auto;
    padding: 20px;
    top: 0;
    bottom: 0;
    left: 0;
    right: 0;
    background: #0e546c;
    border: 2px solid #fff;
    color: #fca311;
    text-align: center;
}
#welcome div {
    margin: 30px;
}
#welcome button {
    background: #fca311;
    padding: 5px 10px;
    border: 2px solid #fff;
    cursor: pointer;
}
#welcome p {
    color: white;
}
#gameover {
    display: none;
    width: 400px;
    height: 80px;
    position: absolute;
    margin: auto;
    padding: 50px;
    top: 0;
    bottom: 0;
    left: 0;
    right: 0;
    border: 2px solid #fff;
    text-align: center;
}
#gameover.win {
    background: #0e546c;
    color: #fca311;
}
#gameover.lose {
    background: #ff0000;
    color: #fff;
}