@media only screen and (max-width:767px){
    html, body{
        width: 100%;
        min-height: 100%;
        padding: 0;
        margin: 0 auto;
        font-family: "Helvetica Neue", Helvetica;
        overflow: hidden;
        scroll-behavior: smooth;
    }

    body a, a:hover, a:focus{
        color: white;
        text-decoration: none;
    }

    /* header */
    .header{
        position: fixed;
        width: 100%;
        display: flex;
        flex-wrap: wrap;
        justify-content: center;
        background-color: rgba(26, 32, 36, 0.85);
        padding: 4vw 5vw;
        z-index: 10;
        text-align: center;
    }

    .header .logo{
        width: 100%;
    }
    
    .header .logo img{
        width: 80vw;
        transition: 0.4s;
    }

    .header .text{
        position: relative;
        padding-top: 3vw;
        display: flex;
    }

    .header .text .text-item{
        color: white;
        font-size: 4vw;
        margin: 0 3vw;
    }
    
    /* button */
    .button{
        position: relative;
        width: 55vw;
        height: 10.5vw;
        margin: 0 auto;
        margin-top: 8vw;
        cursor: pointer;
    }

    .button img{
        width: 100%;
    }

    .button .text{
        position: relative;
        color: white;
        text-align: center;
        font-size: 3.5vw;
        font-weight: bold;
        letter-spacing: 2px;
        margin-top: -7.5vw;
    }

    /* text */
    .title{
        font-size: 6vw;
        letter-spacing: 4px;
    }

    .line{
        width: 40vw;
        margin: 4vw 0;
    }

    .detail{
        font-size: 3.5vw;
        letter-spacing: 2px;
        line-height: 1.9;
        padding: 4vw 0;
    }

    .red{
        color: #E42146;
    }

    /* homepage */
    .homepage{    
        position: relative; 
        width: 100%;
        height: 100%;   
    }
    
    .homepage .background{
        background: url('../image/MV-1-bg.jpg') center no-repeat;
        background-size: cover;
        width: 100%;
        height: 100%;
    }

    .homepage .homepage-text{
        position: relative;
        top: 48%;
    }

    .homepage .homepage-text h1{
        text-align: center;
        color: white;
        font-size: 6vw;
        margin-block-start: 0;
        letter-spacing: 3px;
        font-family:  "Open Sans";
    }

    .homepage .homepage-text .red{
        color: #E42146;
        font-size: 6.5vw;
        font-weight: bolder;
        letter-spacing: 7px;
    }

    .homepage .learnmore{
        position: absolute;
        left: 0;
        right: 0;
        bottom: 4vw;
        color: white;
        text-align: center;
        font-size: 4vw;
        letter-spacing: 2px;
    }

    /* aboutus */
    .aboutus{    
        position: relative; 
        width: 100%;
        height: 100%;   
    }
    
    .aboutus .background{
        background: url('../image/MV-2-bg.jpg') no-repeat center;
        background-size: cover;
        width: 100%;
        height: 100%;
    }

    .aboutus .aboutus-text{
        position: relative;
        top: 56%;
        transform: translate(0, -50%);
        text-align: center;        
        width: 90vw;
        margin: 0 auto;
        color: white;
        background-color: rgba(26, 32, 36, 0.85);
        padding: 12vw 5vw;
    }

    /* services */
    .services{
        position: relative;
        width: 100%;
        height: 100%;   
    }
    
    .services .background{
        width: 100%;
        height: 100%;
    }

    .services .image{
        width: 100%;
        margin: 0 auto;
        padding-top: 26vw;
    }

    .services .image img{
        width: 100%;
        height: 100%;
        object-fit: cover;
    }

    .services .services-text{
        position: relative;
        text-align: center;        
        width: 90vw;
        margin: 0 auto;
        color: #555555;
        padding-top: 10vw;
    }

    .services .services-text .detail{
        padding: 4vw 0 2vw;
    }

    /* joinus */
    .joinus{
        position: relative;
        width: 100%;
        height: 100%;
        overflow-y: auto;
        overflow-x: hidden;
    }
    
    .joinus .join{
        background: url('../image/MV-4-image.jpg') no-repeat center;
        background-size: cover;
        width: 100%;
        height: 118vw;
    }

    .joinus .join .join-text{
        position: relative;
        text-align: center;        
        width: 90vw;
        margin: 0 auto;
        color: white;
        padding-top: 40vw;
    }

    .contact{
        position: relative;
        background-color: #1A2024;
        padding: 5vw;
        text-align: center;
        color: white;
    }

    .contact .contact-row{
        position: relative;
    }

    .contact .contact-row .contact-item{
        width: 80vw;
        margin: 0 auto;
        display: flex;
        justify-content: space-around;
        align-items: center;
        text-align: center;
        font-size: 4vw;
        letter-spacing: 2px;
        padding: 4vw 0;
    }

    .contact .contact-row .contact-item .logo{
        width: 60vw;
        text-align: center;
    }

    .contact .contact-row .contact-item .icon{
        width: 12vw;
    }

    .contact .contact-row .contact-item .contact-text{
        width: 60vw;
    }

    hr{
        width: 80vw;
    }

    .copyright{        
        font-size: 3vw;
        font-weight: bold;
        padding: 0 5vw;
    }
}