body {
    font-family: "Sans Serif";
}

#demo {
    display: none;
}

#installer {
    border: 1px solid red;
    background: #fdd;
    display: none;
}

#installer p {
    margin: 10px;
    padding: 0;
}

#installer p .filenames {
    font-weight: bold;
}

#output {
    margin-top: 1em;
}

img, canvas {
    margin: 0 5px 5px 0;
}

#player {
    position: fixed;
    text-align: center;
    left: 0;
    top: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.95);
    color: white;
    font-size: 20px;
}

#player canvas {
    position: relative;
    display: block;
    margin: 50px auto 20px auto;
}