@media(max-width:780px) {
    .header {
        padding: 15px 5px!important;
    }

    .main-pc {
        display: none;
    }

    .hamburger-list__wrap .header {
        padding: 15px 5px!important;
        background-color: rgb(0, 153, 255) !important;
        text-align: center!important;
    }
    
    .hamburger-list__wrap .header img {
        width: 120px!important;
        height: auto;
    }
    
    .header-r {
        display: none;
    }

    .header-l {
        text-align: center!important;
    }

    .header-l a {
        display: block!important;
        margin: 0 auto!important;
    }

    .header-l p {
        display: none;
    }

    .header-l img {
        width: 120px!important;
        margin-top: -100px!important;
    }

    .responsive input {
        display: none!important;
    }

    .responsive .sns {
        padding-top: 50px;
    }

    .responsive label {
        position: relative;
        float: right;
        clear: both;
        z-index: 1000;
    }
    .responsive span {
        position: fixed;
        display: inline-block;
        width: 35px;
        height: 25px;
        top: 20px;
        right: 10px;
    }
    .responsive span i {
        position: absolute;
        width: 100%;
        height: 2px;
        background-color: rgb(0, 0, 0);
        display: block;
        transition: all .3s ease-in-out;
    }
    .responsive span i:nth-child(1) {
        top: 0;
    }
    .responsive span i:nth-child(2) {
        margin: auto;
        top: 0;
        bottom: 0;
    }
    .responsive span i:nth-child(3) {
        bottom: 0;
    }
    .responsive input:checked + label span i:nth-child(1) {
        margin: auto;
        transform: rotate(45deg);
        background-color: rgb(0, 0, 0);
        right: 0;
        bottom: 0;
        left: 0;
        top: 0;
    }
    .responsive input:checked + label span i:nth-child(2) {
        transform: rotateX(90deg);
        background-color: rgb(0, 0, 0);
        top: 0;
        bottom: 0;
    }
    .responsive input:checked + label span i:nth-child(3) {
        margin: auto;
        transform: rotate(-45deg);
        background-color: rgb(0, 0, 0);
        top: 0;
        right: 0;
        bottom: 0;
    }
    .responsive input:checked + label + .hamburger-list {
        position: fixed;
        z-index: 99;
        opacity: 1;
    }
    .responsive .hamburger-list {
        opacity: 0;
        top: 0;
        right: 0;
        bottom: 0;
        left: 0;
        z-index: 1;
        transition: opacity .3s ease-in-out,z-index .3s ease-in-out;
    }
    .responsive .header {
        background-color: #f15a24;
    }
    .responsive .header img {
        width: 200px!important;
        padding-left: 20px;
    }

    .pic {
        width: 100%;
        height: auto;
        padding: 30px 0;
    }

    .pic img {
        width: 100%;
        height: auto;
    }

    .sns {
        text-align: center;
    }

    .sns img {
        max-width: 80px!important;
        width: 100%!important;
        height: auto!important;
        padding: 0 15px;
    }
    
    .hamburger-list__wrap {
        width: 100%;
        background-color: #ffffff;
        position: absolute;
        right: 0;
        top: 0;
        bottom:0;
        transition: right .3s ease-in-out;
        display: none;
        z-index: 0;
    }
    .responsive input:checked + label + .hamburger-list > .hamburger-list__wrap {
        right: 0;
        display: block;
    }
    
    .hamburger-list__wrap ul a {
        padding: 0 20px;
        color: rgb(0, 0, 0);
        font-size: 20px;
        font-weight: bold;
        height: 60px;
        text-decoration: none;
        display: flex;
        flex-direction: column;
        align-items: flex-start;
        justify-content: center;
        text-decoration: none;
        border-bottom: 1px solid rgb(179, 179, 179);
    }
    .hamburger-list__wrap ul a img {
        width: 25px;
        display: inline-block;
    }
    .hamburger-list__wrap .btn {
        width: 70%;
        height: 50px;
        margin: auto;
        background-color: rgb(161, 161, 161);
        color: rgb(0, 0, 0);
        text-align: center;
        padding-top: 5px;
        margin-top: 15px;
        margin-bottom: 15px;
    }
    .hamburger-list__wrap .btn a {
        display: block;
    }
    .hamburger-list__wrap p {
        padding: 0 20px;
        padding-top: 30px;
        color: rgb(0, 0, 0);
        font-size: 24px;
        height: 60px;
        text-decoration: none;
        display: flex;
        flex-direction: column;
        align-items: flex-start;
        justify-content: center;
        text-decoration: none;
    }
    
    /*.hamburger-list__wrap a {
        border-bottom: 1px solid rgb(196, 196, 196);
    }*/
    
    .hamburger-list__wrap a:hover{
    text-decoration: underline;
    transition: 0.5s;
    }


    section {
        padding-top: 50px!important;
    }

    .aboutback-r {
        margin-top: 2100px!important;
    }

    .tex h2 {
        font-size: 20px!important;
    }

    .about-title {
        padding-left: 15px!important;
        padding-right: 15px!important;
    }

    .about-title h1 {
        font-size: 25px!important;
    }

    .about {
        flex-direction: column;
    }

    .session {
        text-align: left!important;
    }

    .session h1 {
        font-size: 20px!important;
    }

    .btn-wrepper {
        flex-direction: column;
        gap: 20px!important;
    }

    .topic-wrepper h1 {
        font-size: 20px!important;
    }


    .footer-b ul {
        flex-direction: column;
    }

    .sns img {
        max-width: 60px!important;
    }

    .topic-wrepper {
        display: none;
    }


}


@media(min-width: 780px) {
    .responsive {
        display: none;
    }

    .main-sumafo {
        display: none;
    }

    .topic-wrepper-res {
        display: none;
    }






}