body
{
    font-family: arial, verdana, san-serif;
    background-color: #ddd;
}

body,div,span
{
    margin: 0;
    padding: 0;
    border: 0;
}

div#container
{
    width: 100%;
    height: 100%;
    background-color: #ddd;
}

div#container.nearlydone
{
    background-color: #900;
}

div#container.done
{
    background-color: #090;
}

div#form,
div#display
{
    text-align: center;
    width: 100%;
    padding-top: 150px;
}

div#display
{
    display: none;
}

div#display span
{
    font-size: 10em;
}

div#container.nearlydone div#display span
{
    font-size: 12em;
    color: #fff;
}