@media (max-width: 767px) {
    main {
        margin: 0 0 40px;
    }  
    /* TOP */
    .top {
        height: 100vh;
        position: relative;
    }
    .center {
        position: absolute;
        top: 50%;
        left: 50%;
        margin-right: -50%;
        transform: translate(-50%, -50%);
        background: url(/images/common/top_desital_s.jpg);
        -webkit-background-clip: text;
        color: transparent;
    }
    .top h1 {
        padding-top: -50%;
        text-align: center;
        font-size: 60px;
    }
    .top h2 {
        margin-top: 20px;
        text-align: center;
        font-size: 18px;
    }
    .top p {
        padding-top: 20px;
        text-align: center;
        font-size: 12px;
    }

    /* SERVICE */
    .service {
        height: auto;
    }
    .service h2 {
        margin-top: 60px;
        text-align: center;
        font-size: 30px;
        color: #566f84;
    }
    .flex-wrap {
        margin-top: 60px;
        display: block;
        width: 100%;
    }
    .s-box {
        width:100%;
        text-align: center;
        margin-bottom: 40px;
        color: #868e93;
    }
    .s-box h4 {
        text-align: center;
    }
    .s-box img {
        width: 15%;
        margin-top: 20px;
    }
    .s-box p {
        font-size: 10px;
        text-align: left;
        padding: 20px;
    }
}