body {
    font-family: sans-serif;
    margin: 20px;
    background: #fff;
    color: #000;
}

h1 {
    margin: 0 0 10px 0;
}

.controls {
    margin-bottom: 10px;
}

select, button {
    padding: 5px 10px;
    font-size: 14px;
}

button:disabled {
    color: #999;
}

#screen_container {
    background: #000;
    width: 640px;
    height: 400px;
    border: 1px solid #000;
    overflow: auto;
}

#screen_container > div {
    color: #fff;
    padding: 5px;
}

#screen_container canvas {
    display: block;
}

hr {
    margin: 20px 0;
}

p {
    font-size: 12px;
    color: #666;
}

a {
    color: #00f;
}