.album_box { position: relative; width: 1000px; }
.album_box .slick-prev { left: 5px; z-index: 10; }
.album_box .slick-next { right: 5px; z-index: 10; }
.album_box ul li img { width: 100%; height: 600px; object-fit: cover; }
.album_box .slider_nav ul li img { width: 90%; height: 100px; }

@media screen and (max-width: 1160px) {
    .album_box { width: 100%; }
    .album_box .slider_for ul li img { height: 60vw; }
}
@media screen and (max-width: 768px) {
    .album_box .slider_nav ul li img { height: 13vw; }
}
@media screen and (max-width: 480px) {
    .album_box .slider_nav ul li img { height: 22vw; }
}