.UIBanner {
    width: 1170px;
    margin: 0 auto;
}
.UIBanner img {
    width: 100%;;
}
.UIBanner .flag {
    position: absolute;
    top: 120px;
    right: 0;
    z-index: 2000;
    width: 1170px;
    left: 0;
    margin: 0 auto;
}
.UIBanner .flag img{
    width:auto;
}