@media screen and (max-width: 640px) {

    * {
        font-size: 14px;
    }

    .top-page {
        background-image: url("../images/background/mobile/main-image.png");
        height: 158.5vw;
        background-position: bottom center;
    }

    .top-page-voltec-logo-center-container img {
        content: url("../images/logos/mobile/voltec-logo-with-title-white.png");
        width: 51%;
    }

    .top-page-voltec-logo-center-container {
        height: 79.5%;
    }

    .navbar {
        padding: 1.4rem 0;
    }

    .brand {
        padding-left: unset;
    }

    .header-content .header-title-container:first-child {
        height: 7vw;
    }

    section {
        padding-left: unset;
        padding-right: unset;
    }

    .about-header.header-container {
        padding: 3.2vw 0 0 0;
    }

    .header-container p {
        width: 100%;
        height: 100%;
        font-size: 4vw;
        line-height: 5.5vw;
        color: #000000;
        font-weight: 400;
    }

    .header-title-container {
        width: 100%;
    }


    .header-title-container h2 {
        font-size: calc(6.4vw);
        line-height: 6vw;
    }

    .header-title-container h2::before {
        font-size: calc(13.3vw);
        white-space: nowrap;
        top: -4.2vw;
        line-height: 6vw;
        left: 6.5vw;
    }

    .about-us img.paper-box {
        width: 95%;
    }

    .about-us {
        background-size: 31%;
        padding-bottom: 30px;
    }

    .header-container {
        padding: 70px 0 0 2rem;
    }

    .header-image-container img {
        width: 96%;
        margin-bottom: 20px;
    }

    .about-header.header-container .header-content {
        padding: 14.3vw 0 6.2vw 0;
    }


    img.paper-box {
        content: url("../images/supported-pictures/mobile/about-us_holding-paperbox.png");
    }

    img.header-middle {
        content: url("../images/supported-pictures/mobile/about-us_header-middle.png");
    }

    .about-us .header-image-container {
        margin: unset;
    }

    .about-us img.header-middle {
        padding-top: 10vw;
        width: 95%;
    }

    .about-us .newspaper-master-containter {
        width: 89%;
        display: unset;
    }

    .about-us .main-newspaper {
        display: block;
        padding-bottom: 20px;
        width: 90.6%;
    }

    .about-us .main-newspaper .newspaper {
        display: flex;
        width: 95%;
        margin: auto;
        justify-content: space-between;
    }

    .newspaper-image {
        width: 87%;
        margin-bottom: 20px;
    }

    .newspaper-content {
        display: block;
        justify-content: center;
        margin: auto;
        padding-left: 8.177083vw;
        width: 100%;
        position: relative;
    }

    .newspaper-content .news-title {
        position: absolute;
        top: -14.5vw;
    }

    .newspaper-content .news-date {

        position: absolute;
        top: 6.7vw;
    }

    .main-newspaper :nth-child(3) .newspaper-content .news-title {
        position: absolute;
        top: -14vw;
    }

    .main-newspaper :nth-child(3) .newspaper-content .news-date {

        position: absolute;
        top: 8.5vw;
    }

    .main-newspaper :nth-child(4) .newspaper-content .news-title {
        position: absolute;
        top: -14.9vw;
    }

    .main-newspaper :nth-child(4) .newspaper-content .news-date {

        position: absolute;
        top: 5.5vw;
    }

    .about-us .main-newspaper .newspaper img {
        width: 110%;
    }

    .about-us .main-newspaper .newspaper .news-title {
        /* width: 280px;
        height: 126px; */
        font-size: calc(1.3541666666666667vw + 9px);
        line-height: calc(2.03125vw + 10px);
        color: #000000;
        font-weight: 400;
        font-family: 'Noto Sans JP', sans-serif;
        width: 85%;
    }

    .about-us .main-newspaper .newspaper .news-date {
        font-size: calc(1.1458333333333333vw + 10px);
        line-height: calc(1.3541666666666667vw + 10px);
        color: #aaaaaa;
        font-weight: 400;
        font-family: 'Noto Sans JP', sans-serif;
    }

    .table-supporter {
        display: block;
        width: 87%;
        padding-bottom: 20px;
    }

    .table-supporter-main {
        display: flex;
        justify-content: center;
        margin: auto;
        width: 100%;
    }

    .table-gray-div {
        width: calc(12.3vw*3);
        height: calc(5.729166666666667vw*3);
        background-color: #d9d9d9;
        margin: 2px 2px 3px 2px;
        text-align: center;
    }

    .table-container-main {
        display: flex;
        width: 70%;
        justify-content: center;
        margin: auto;
    }

    .table-container {
        display: block;
        text-align: center;
        width: auto;
        padding: unset;
    }

    .table-container-header h1 {
        padding-top: 32px;
        padding-bottom: 25px;
        font-size: calc(36px * 0.60);
    }

    .table-container-header {
        margin: 0;
    }

    .recruitment-page {
        padding-bottom: unset;
    }

    .recruitment-title {
        padding-bottom: 11vw;
    }

    .recruitment-content {
        padding-top: 10vw;
        /* width: 86%; */
        width: 90%;
        padding-bottom: 11.2vw;
    }

    dl img {
        padding-right: 1.8px !important;
    }

    .recruitment-page h1 {
        font-size: calc(48px * 0.60);
    }

    .recruitment-page p {
        font-size: calc(26px * 0.60);
    }

    .recruitment-content-container {
        padding: unset;
    }

    .recruitment-content-container dl {
        padding-bottom: unset;
        margin-bottom: 33px;
    }

    dl.recruitment-education-backround-container {
        padding-bottom: 16px;

    }

    .recruitment-content-container .recruitment-communication-skill-container dt img,
    .recruitment-content-container .recruitment-required-skill-container dt img {
        margin-bottom: -5px;
    }

    dl.recruitment-communication-skill-container {
        padding-bottom: 15px;
    }

    dl.recruitment-required-skill-container {
        padding-bottom: 9px;
    }

    dl.recruitment-benefits-container {
        padding-bottom: 2vw;
    }

    dl.recruitment-benefits-container ul li {
        line-height: 6.8vw !important;
    }

    .recruitment-content-container ul :nth-child(2) {
        line-height: 25px;
    }


    .recruitment-content-container li::before {
        left: 27px
    }

    .recruitment-content-container ul :nth-child(3) {
        line-height: 24px;
    }

    .recruitment-content-container ul :nth-child(4) {
        line-height: 24px;
    }

    .recruitment-content-container ul :nth-child(5) {
        line-height: 24px;
    }

    .recruitment-content-container ul {
        line-height: calc(36px *0.60);
        padding-left: 37px;
    }

    .recruitment .header-container {
        padding: 74px 0 2rem 0rem;
    }

    .recruitment-table {
        width: 100%;
        display: block;
        margin: auto;
    }

    .recruitment-content-container .recruitment-education-backround-container dt img {
        margin-bottom: 1vw;
    }

    iframe {
        height: 10%;
    }

    .recruitment-table-container {
        display: block;
    }

    .recruitment-table-images-container {
        display: flex !important;
        margin: auto !important;
        justify-content: space-evenly !important;
        padding-left: 0 !important;
        width: 56.6% !important;
    }

    .map-container iframe {
        width: 100%;
    }

    .recruitment-table-images-container img {
        display: flex !important;
        margin: auto !important;
        justify-content: space-evenly !important;
        width: 95%;
    }

    .recruitment-page .recruitment-table-images-container img {
        padding-left: unset;
    }


    .recruitment-page .recruitment-content-container {
        padding: unset !important;
    }

    img.holding-clipboard {
        content: url("../images/supported-pictures/mobile/recruitment_holding-clipboard.png");
        padding-right: 15px;
        width: 99.4%;
    }

    img.lady-program {
        content: url("../images/supported-pictures/mobile/recruitment_lady-program.png");
    }

    .contact-us {
        padding: unset;
        background-image: url("../images/background/mobile/contact-us_handwith-keyboard.png");
        background-size: cover;
        height: auto;
        margin-bottom: 11.7vw;
        width: 100%;
        background-position-y: 80%;

    }

    .contact-us h1 {
        font-size: 11.1vw;
        padding-top: 50px;
    }

    .contact-us p {
        font-size: 4vw;
        text-align: center;
        padding-left: 65.9px;
        padding-right: 65.9px;
        padding-top: 40px;
    }

    .office .office-container {
        padding: unset;
        width: 87.5%;
        padding-bottom: 25px;
    }

    .office .office-container .header-container {
        padding: unset;
    }

    .office .header-container {
        padding: 0px 0 2rem 0rem;
    }

    .office .header-container h1 {
        font-size: calc(48px *0.60);
        padding-bottom: unset;
    }

    .office .header-container p {
        font-size: calc(26px *0.60);
        padding-bottom: 45px;
    }

    .contact-us button {
        font-size: 4vw;
        text-align: center;
        width: 75%;
        padding: 5px;
        margin-bottom: 50px;
    }

    .map-container {
        padding-left: unset;
        width: 100%;
    }

    .office {
        background-size: 25%;
        padding-bottom: 10.2vw;
    }
}

/* for menu only*/

@media only screen and (max-width: 988px) {
    .navbar .burger {
        display: block;
        opacity: 1;
        width: 2.5rem;
        visibility: visible;
    }

    .top-page {
        padding-top: 0px;
    }

    .navbar .burger-line {
        height: 3px;
    }

    .navbar .burger-line:nth-child(4) {
        top: 1.3rem;
    }

    .navbar .burger-line:nth-child(1) {
        top: -4px;
    }

    .navbar .menu {
        width: 100%;
        max-height: 0rem;
        padding: 0;
        opacity: 0;
        visibility: hidden;
        overflow: hidden;
        transition: all 0.35s ease;
    }

    .navbar .menu.is-active {
        opacity: 1;
        visibility: visible;
        background-color: #3f3a39;
    }

    .navbar .menu.is-active ul li a {
        color: white !important;
    }



    .navbar .menu-inner {
        display: flex;
        flex-direction: column;
        justify-content: center;
        align-items: center;
        gap: 0.75rem;
        padding: 3rem 0;
    }

}

/* for footer only*/
@media screen and (max-width: 640px) {
    nav.top-menu-pc {
        display: none;
    }


    nav.top-menu-mobile {
        display: flex;
        justify-content: center;
        padding-bottom: 21px;
    }

    footer .nav.top-menu-mobile {
        padding-bottom: 1vw;
    }

    .foorter-menu-header-containter-mobile {
        display: flex;
        margin: auto;
        /* justify-content: space-around; */
        width: 97%;
        margin-left: -2vw;
    }

    .foorter-menu-header-containter-mobile ul {
        width: 50%;
    }

    .foorter-menu-header-containter-mobile :first-child {
        margin-right: 6vw;
    }

    .menu {
        letter-spacing: 1px;
        line-height: 48px;
        font-size: calc(26px * 0.60);
    }

    .foorter-header-containter p {
        font-size: 4vw;
        letter-spacing: 1px;
        line-height: 5.5vw;
        width: auto;
    }

    .foorter-header-containter {
        display: block;
        width: 80%;
        text-align: center;
    }

    .foorter-header-containter-main {
        padding-top: 7vw;
        display: flex;
        justify-content: space-between;
        margin: auto;
        vertical-align: bottom;
        align-items: flex-end;
        width: 100%;
    }


    .top-menu-content {
        width: 100%;
        display: flex;
        flex-direction: column;
    }



    .top-menu-mobile .top-menu-content {
        position: relative;
        margin-top: 5.5vw;
    }

    .top-menu-mobile .top-menu-content aside {
        position: absolute;
        bottom: 0px;
        right: 1vw;
    }

    .center-footer-logo {
        display: flex;
        margin: auto;
        justify-content: center;
    }

    .center-footer-logo img {
        width: 60%;
    }



    footer {
        height: 100%;
        padding: 0px 1.5vw 3.5vw 50px;
    }


    footer aside {
        margin-top: unset;
    }

    footer p {
        margin: 0;
    }



}


@media screen and (max-width: 430px) {
    .contact-us {
        background-position: 0 -10px;
    }

    .top-menu-mobile .top-menu-content aside {
        position: absolute;
        bottom: -9px;
        right: 1vw;
    }

    .recruitment-table {
        width: 97%;
    }
}