:root {
    --carousel-gap: 20px; /* 自定义半幅轮播图间隙 */
}

.custom_carousel {

    width: 70%;
    position: relative;
}
.custom_carousel_inner {
    width: 100%;

    overflow: hidden;
    position: relative;

}
.track {
    display: flex;
    width: 100%;
    transition: transform 0.5s ease;
    will-change: transform;
    gap: var(--carousel-gap);

}
.item {
    /*min-width: 50%; !* 每次显示半幅 *!*/
    min-width: calc(50% - var(--carousel-gap)/2);
    height: 100%;
    /*flex-shrink: 0;*/
}


.item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}
.custom_carousel .btn {
    position: absolute;
    top: 40%;
    transform: translateY(-50%);
    /*background: rgba(0,0,0,0.3);*/
    color: gray;
    border: none;
    padding: 10px;
    cursor: pointer;
    z-index: 100;
}
.prev { left: -60px;  }
.next { right: -60px; }