html, body
{
    margin: 0;
    padding: 0;
}
.pagebox
{
    position: relative;
    background-repeat: no-repeat;
    background-position: bottom;
}
.w_sfbox-002>.w_sfbox>.p_fbox>div>.p_bgBox
{
    height: 100%;
    width: 100%;
    background-repeat: no-repeat;
    background-position: center;
    background-size: auto;
    animation: changeBiger 30s linear infinite;
}