.img_dt_sl_main{
    background: rgba(172, 181, 176, 0.8);
    height: 100%;
    width: 100%;
    position: fixed;
    left: 0;
    top: 0;
    z-index: 999;
    display: none;
}
    .img_dt_sl_main .table{
        width: 100%;
        height: 100%;
        display: table;
    }
        .img_dt_sl_main .table .cell{
            display: table-cell;
            text-align: center;
            vertical-align: middle;
        }
            .img_dt_sl_main .table .cell img{
                max-width: 810px;
                cursor: pointer;
            }
    .img_dt_sl_main .prev {
        position: absolute;
        top: 50%;
        left: 50%;
        width:  50px;
        margin: -25px 0 0 -700px;
        cursor: pointer;
        opacity: 0.8;
    }
    .img_dt_sl_main .prev:hover {
        opacity: 1;
    }
    .img_dt_sl_main .next {
        position: absolute;
        top: 50%;
        right: 50%;
        width:  50px;
        margin: -25px -700px 0 0;
        cursor: pointer;
        opacity: 0.8;
        transform: rotate(180deg);
    }
    .img_dt_sl_main .next:hover {
        opacity: 1;
    }

/* MEDIA QUERY */

/* 1620px */
@media (max-width: 1620px) {
    .img_dt_sl_main .prev {
        margin: -25px 0 0 -580px;
    }
    .img_dt_sl_main .next {
        margin: -25px -580px 0 0;
    }
}
/* 1620px(end) */

/* 1270px */
@media (max-width: 1270px) {
    .img_dt_sl_main .prev {
        margin: -25px 0 0 -470px;
    }
    .img_dt_sl_main .next {
        margin: -25px -470px 0 0;
    }
}
/* 1270px(end) */

/* 1040px */
@media (max-width: 1040px) {
    .img_dt_sl_main .table .cell img {
        max-width: 600px;
    }
    .img_dt_sl_main .prev {
        margin: -25px 0 0 -360px;
    }
    .img_dt_sl_main .next {
        margin: -25px -360px 0 0;
    }
}
/* 1040px(end) */

/* 825px */
@media (max-width: 825px) {
    .img_dt_sl_main .table .cell img {
        max-width: 290px;
    }
    .img_dt_sl_main .prev {
        margin: -25px 0 0 -145px;
        width: 30px;
    }
    .img_dt_sl_main .next {
        margin: -25px -145px 0 0;
        width: 30px;
    }
}
/* 825px(end) */

/* MEDIA QUERY(END) */