.item_container {
    display: flex;
    padding: 0 20px;
    width: 100%;
    min-height: 1px;
    height: 1000px;
}
.list_box {
    flex: 1;
    margin-top: 100px;
    min-width: 200px;
}
.item_center {
    margin: 0 auto;
    width: 80%;
    max-height: 700px;
}
@media screen and (max-width: 1000px) {
    .item_container {
        flex-direction: column;
    }
    .list_box {
        flex: 0;
        margin-top: 50px;
    }
}
.shoes_list {
    position: relative;
    width: 100%;
    min-width: 300px;
    max-height: 700px;
    /* border: solid 1px #000; */
}
.shoes_list li  {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
}
.shoes_list li:not(:first-child) {
    display: none;
}
.shoes_size {
    width: 100%;
    min-width: 300px;
}
#body,
#front,
#basic,
#fuchi,
#back,
#strap,
#cover1 {
    position: relative;
    top: 0;
    margin: 0 auto;
    max-width: 500px;
}