div.turtle-container {
    position: relative;
    height: 100%;
    min-height: inherit;
    width: 100%;
}

canvas.turtle-window {
    background: white;
    border: 1px solid;
    height: 100%;
    width: 100%;
    position: absolute;
}

pre.turtle-stdout {
    height: 100%;
    width: 100% !important;
    position: absolute;
    z-index: 100;
    overflow: auto;
}