style.css

* {
    font-family: sans-serif;
}

#canvas {
    border: 1px solid #000000;
}
body {
    margin:0;
    overflow: hidden;
}

#HUD {
    font-family: sans-serif;
    position: fixed;
    font-size: 18px;
    top: 20px;
    left: 20px;
    width: 300px;
    padding: 40px;
    background-color: rgba(0, 0, 0, 0);
    color: #fff;
    text-shadow: 0 0 18px rgba(0, 0, 0, 0.3);
    border-radius: 10px;
}

#crash {
    font-size: 42px;
    color: #ff5722;
    text-align: center;
    position: fixed;
    top: 50px;
    left: 0px;
    width: 100%;
}

#simSpeed {
    padding: 10px;
    width: 70%;
    border-radius: 5px;
    opacity: 0.9;
    font-size: 26px;
    margin: 4px;
}

#rocketConfig {
    font-family: monospace;
    padding: 2px;
    width: 70%;
    border-radius: 5px;
    opacity: 0.9;
    font-size: 12px;
    margin: 4px;
    height: 100px;
}