.platform-preview {
    margin: 40px auto;
    position: relative;
}

.platform-preview .preview-view {
    overflow: hidden;
    width: 100%;
    position: relative;
}

.platform-preview .view-img {
    text-align: center;
}

.platform-preview .preview-view .swiper-slide {
    background-position: center;
    background-size: cover;
    width: 800px;
    box-shadow: 0px 0px 30px 0px rgb(165 165 165);
    margin-top: 50px;
    margin-bottom: 50px;
}

.platform-preview .preview-view .swiper-slide img {
    display: block;
    width: 100%;
}


.platform-preview .bg-img{
    position: absolute;
    width: 100%;
    height: 400px;
    bottom: 0;
    background: url("../images/preview-bg.png") no-repeat 100% 100%/ 100% 100%;
}