html, body { margin: 0; }

#dimIntro   {
    position: absolute;
    right: 0;
    bottom: 0;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    overflow: hidden;
    text-align: center;
}
#dimIntro,
#dimIntro *    {
    background-color: #000;
    cursor: pointer;
}
#dimIntro .flashIntro {
    margin: 100px auto 0 auto;
}