.home-logo .swiper-slide img{ aspect-ratio: 135/87;}
.home-pro .list li .img img {object-fit:contain;background:#fff}
.home-logo .swiper-slide img{display:block;background:#fff;object-fit:contain;width:100%;padding:5px}
.home-logo .swiper-slide.sblack img{background:#000}
.home-logo .swiper-slide.sgray img{background:#f3f5f4;border:1px solid #ccc;}
.home-about .aboutinfo .list li{width: 100%;}