:root {--swiper-theme-color: #fff;}
.swiper-button{width: 40px;height: 94px;background: #00000080;border-radius: 5px;transition: all .3s;opacity: 0;}
.swiper-button-prev{left: -40px;}
.swiper-button-next{right: -40px;}
.swiper:hover .swiper-button{opacity: 1;}
.swiper:hover .swiper-button-prev{left: 100px;}
.swiper:hover .swiper-button-next{right: 100px;}
.banner {position: static;height: 600px;margin-left: auto;max-width: 100%;}
.banner .swiper{width: 100%;}