div.shop-site-index-page
{
    display: block;
    position: relative;
}
div.shop-site-index-page div.shop-banner-div
{
    display: block;
    position: relative;
    height: 600px;
}
div.shop-site-index-page div.shop-banner-div > img.shop-banner-img
{
    display: block;
    position: relative;
    height: 100%;
    margin: 10px auto;
}