@media (max-width: 500px) {
    * {

        box-sizing: border-box;
        margin: 0;
        padding: 0;
    }

    .center {
        display: flex;
        justify-content: center;
    }

    body {

        margin: 0;
        padding: 0;
        background-color: #fff2db;
        height: auto;
        width: auto;
        padding-bottom: 35vw;
    }



    .back img {
        margin-top: -5px;
        width: 100vw;
    }

    .margin-top {
        margin-top: -1090vw;
    }

    .group {
        margin-top: 18vw;
        margin-left: 10vw;
    }

    .logo img {
        width: 75vw;
        margin-left: 4vw;
        margin-bottom: -12vw;
        margin-top: 16vw;
    }

    .ribbon img {
        height: auto;
        width: 50vw;
        margin-left: 16vw;
    }

    .contents img {
        margin-top: 6vw;
        height: auto;
        width: 80vw;
    }

    .f {
        margin-top: 8vw;
        margin-left: 10vw;
    }

    .chui img {
        width: 86vw;
        margin-top: 14vw;
        margin-left: 6.7vw;
    }

    .bottom-tab {
        z-index: 100;
        position: fixed;
        bottom: 0;
        left: 50%;
        transform: translateX(-50%);
        width: 100%;
        max-width: 600px;
        background: #ffffff;
        padding: 15px;
        display: flex;
        justify-content: space-around;
        height: 100px;
    }

    .tab-item {
        width: 60px;
        height: 60px;
        background: #14325c;
        border-radius: 50%;
        display: flex;
        flex-direction: column;
        align-items: center;
        justify-content: center;
        color: white;
        font-size: 14px;
        font-style: italic;
        box-shadow: 5px 5px 8px rgba(0, 0, 0, 0.2),
            -5px -5px 8px rgba(255, 255, 255, 0.3);
        transition: all 0.3s ease;
    }

    .tab-item i {
        font-size: 20px;
        margin-bottom: 5px;
    }

    .tab-item:hover {
        transform: scale(1.1);
    }

    .bar img {
        display: flex;
        justify-content: center;
        height: 13vw;
    }

    .barr {
        display: flex;
        justify-content: center;
        gap: 10vw;
    }



}





@media (min-width: 500px) {


    .bg-wrapper {
        background: url('img/back.png');
        background-position: center;
        background-size: cover;
        background-repeat: no-repeat;
        background-attachment: fixed;
        width: auto;
        height: auto;
    }

    .container {
        max-width: 500px;
        margin: 0 auto;
        /* padding: 40px 16px; */
        background: #fff2dc;
        position: relative;
        z-index: 1;
        height: 5450px;
    }

    body {
        margin: 0;
        padding: 0;
        height: auto;
        width: auto;
    }

    .center {
        display: flex;
        justify-content: center;
        flex-direction: column;
    }

    .bottom-tab {
        z-index: 100;
        position: fixed;
        bottom: 0;
        left: 50%;
        transform: translateX(-50%);
        width: 100%;
        max-width: 500px;
        background: #ffffff;
        display: flex;
        justify-content: space-around;
        height: 100px;
        margin-left: 0px;
    }

    .back img {
        margin-top: -5px;
        width: 500px;
    }

    .margin-top {
        margin-top: -5480px;
    }

    .group {
        margin-top: 80px;
        margin-left: 50px;
    }

    .logo img {
        width: 350px;
        margin-left: 20px;
        margin-bottom: -60px;
        margin-top: 80px;
    }

    .ribbon img {
        height: auto;
        width: 250px;
        margin-left: 80px;
    }

    .contents img {
        margin-top: 30px;
        height: auto;
        width: 400px;
    }

    .f {
        margin-top: 50px;
        margin-left: 50px;
    }

    .chui img {
        width: 430px;
        margin-top: 80px;
        margin-left: 33.5px;
    }



    .tab-item {
        width: 60px;
        height: 60px;
        background: #14325c;
        border-radius: 50%;
        display: flex;
        flex-direction: column;
        align-items: center;
        justify-content: center;
        color: white;
        font-size: 14px;
        font-style: italic;
        box-shadow: 5px 5px 8px rgba(0, 0, 0, 0.2),
            -5px -5px 8px rgba(255, 255, 255, 0.3);
        transition: all 0.3s ease;
    }

    .tab-item i {
        font-size: 20px;
        margin-bottom: 5px;
    }

    .tab-item:hover {
        transform: scale(1.1);
    }

    .bar img {
        display: flex;
        justify-content: center;
        height: 60px;
        margin-top: 20px;
    }

    .barr {
        display: flex;
        justify-content: center;
        gap: 50px;
    }

}