.indexbanner {
    width: 1200px;
    height: 400px;
    margin: 0 auto;}.swiper-wrapper {
    position: relative;
    width: 100%;
    height: 100%;
    z-index: 1;
    display: -webkit-box;
    display: -moz-box;
    display: -ms-flexbox;
    display: -webkit-flex;
    display: flex;
    -webkit-transition-property: -webkit-transform;
    -moz-transition-property: -moz-transform;
    -o-transition-property: -o-transform;
    -ms-transition-property: -ms-transform;
    transition-property: transform;
    -webkit-box-sizing: content-box;
    -moz-box-sizing: content-box;}