#gnb .gnb_button { display: none; }
#gnb .gnb_button .btn-menu-close { display: none; }
@media screen and (max-width: 1024px) {
    #app {
        flex-direction: column;
    }
    #gnb {
        width: 100%;
        min-height: unset;
        flex-basis: unset;
        max-width: unset;
        min-width: unset;
        padding: 0.5rem 0rem;
        flex-direction: row;
        flex-wrap: wrap;
        justify-content: space-between;
        background-color: transparent;
        border-right: 0px;
        overflow:auto;
    }

    #gnb .logo { display: inline-block; width: unset; height: 50px; padding: 0; margin: 0; }
    #gnb .logo a, #gnb .logo a img { display: inline-block; width: inherit; height: inherit; }
    #gnb .gnb_button {
        display: flex;
        justify-content: center;
        align-items: center;
        width: 50px;
        height: 50px;
        z-index: 9;
        position: relative;
        border: 0px;
        background-color: unset;
    }
    #gnb .gnb_button .btn-menu-open,
    #gnb .gnb_button .btn-menu-close {
        transition: all 0.6s;
    }

    #gnb .gnb_button svg { width: 45px; height: 45px; }
    #gnb .gnb_button .btn-menu-close { display: none; }
    #gnb .gnb_wrap {
        position: fixed;
        width: 80%;
        height: 100%;
        top: 0;
        right: -100%;
        padding: 60px 1rem 0;
        z-index: 8;
        transition: all 1s;
        background-color: rgba(255,255,255,0.9);
    }
    #gnb .gnb_wrap .gnb-li a { justify-content: end; }


    #home .content-logo { display: none; }
    #home .flex_div { background-color: rgba(0,0,0,0.05); justify-content: space-evenly; }
    #home .flex_div .photo { width: calc((100% / 2) - 10px); flex-basis: calc((100% / 2) - 10px); max-width: calc((100% / 2) - 10px); height: 250px; padding: 2.5px 0px; flex-basis: unset; }
    #home .flex_div .photo .img_bg { position: relative; overflow: hidden; padding: 0; }
    #home .flex_div .photo .img_bg img,
    #home .flex_div .photo .img_bg video { object-fit: cover; border: 0; padding: 0; }
    #home .flex_div .photo .content { display: none; }
    #home .flex_div .photo:nth-of-type(-n+2) { padding-top: 5px; }
    #home .flex_div .photo:nth-last-of-type(-n+1) { padding-bottom: 5px; }


    #sub_page { width: 100%; overflow: unset !important; }
    #sub_page .sub_top_img_wrap h1 { margin: 0 !important; }
    #sub_page .swiper-wrap { height: fit-content; }
    #sub_page #hello .sub_page_info_wrap p { word-break: keep-all; }
    #sub_page .sub_page_info_wrap .exercise_ul,
    #sub_page .sub_page_info_wrap .exercise_ul li { padding: 0 !important;  }
    #sub_page .sub_page_info_wrap .exercise_ul p { padding: 20px 0px !important; margin: 0 !important; border-left: 0; border-right: 0; text-align: center;}
    #sub_page .sub_top_img_wrap img { width: 100%; height: 100%; object-fit: cover; }
    #sub_page #introduce h3 { border-bottom: 0; }
    #sub_page #introduce .sub_page_info_wrap h3 { margin-bottom: 0rem; }
    #sub_page #introduce table thead { display: none; }
    #sub_page #introduce tbody tr { display: flex; flex-direction: column; padding: 0.5rem 0.5rem 1.5rem;}
    #sub_page #introduce tbody tr td { display: flex; width: 100%; padding: 0.5rem 0rem; border: 0px; justify-content: center;}


    footer { width: 100%; }
    #ft_copy { padding: 1rem 0 0.75rem; }
    #ft_copy p { font-size: 1rem; }
    #ft_copy p strong { display: none; }
    #ft_copy p { display: flex; flex-direction: column; }
}