body
{
    position: fixed;
    top: 0px;
    bottom: 0px;
    left: 0px;
    right: 0px;
    margin: 0;
    padding: 0;
    overflow: hidden;
}

#raincode
{
    height: 100%;
    width: 100%;
    margin: 0;
    padding: 0;
}