#slider_banner{
    opacity: 1!important;/* firefox 表示崩れ防止用 */
}
.splide__arrow {
    width: 3em;
    height: 3em;
    background: #f2f2f2;
    opacity: .9;
}
.splide__arrow--next{
    right: 0;
    padding-right: 1em;
    transform: translateX(50%);
}
.splide__arrow--prev{
    left: 0;
    padding-left: 1em;
    transform: translateX(-50%);
}
.splide__slide {
    width: 100vw;
    height: 100vw;
    position: relative;
}
.slide-item {
    width: 100vw!important;
    height: 100vw!important;
    object-fit: cover;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%,-50%);
    -webkit-transform: translate(-50%, -50%);
    transform: translate(-50%, -50%);
}
.slider-link{
    display: block;
    height: 100vw;
}