html {
    font-size: 16px;
}
body {
    position: relative;
    margin: 0;
    min-height: 100vh;
    /* height: 4769px; */
    text-align: center;
    vertical-align: top;
}

.bg {
    position: absolute;
    top: 0;
    left: 0;
    z-index: 0;

    width: 100%;
    height: 100%;
    background-image: url('bg.png');
    background-size: 20rem;
    background-repeat: no-repeat;
    background-position: calc(0% - 10rem) 15%;
    background: calc(0% - 10rem) 15% / 20rem no-repeat url('bg.png'), calc(100% + 8rem) calc(100% + 7rem) / 16rem no-repeat url('bg.png');
    opacity: 1;

    /* background-image: url('about_us.jpg');
    background-size: 100%;
    background-repeat: no-repeat;
    background-position: 50% 0%; 
    opacity: 0.6; */
}

.app {
    position: relative;
    z-index: 1;
    font-size: 0;
}
.head {
    border-bottom: 2px solid #ccc;
}
.head img{
    position: relative;
    left: 0.16rem;

    margin: 0;
    padding: 0.68rem 0 0.5rem;
    width: 7.13rem;
}

.aboutus {

}
.aboutus img {
    width: 5.26rem;
    padding: 0.7rem 0 0.92rem;
}

.content {
    position: relative;
    width: 12rem;
    margin: 0 auto;
}
.quote-left, .quote-right {
    width: 1.17rem;
}
.quote-left {
    position: absolute;
    top: -0.5rem;
    left: -0.04rem;
}
.quote-right {
    position: absolute;
    bottom: -0.5rem;
    right: 0.12rem;
}
.content-text {
    padding: 0.9rem 0.5rem;
    text-align: left;
    background-color: rgba(220, 220, 220, 0.2);
}
.content-text p {
    margin: 0;
    padding: 0.23rem 0;
    line-height: 1.64;
    font-size: 0.31rem;
    /* font-weight: bold; */
    color: #333;
}
.content-img {
    margin-top: 0.14rem;
    padding-bottom: 0.58rem;
    height: 9rem;
    /* background: rgba(125, 45, 256, 0.3); */
}
.content-img img {
    position: relative;
    left: -0.15rem;
    width: 11.3rem;
}

.apps {
    padding-top: 2.94rem;
    /* height: 7.08rem; */
}
.apps-head img {
    width: 3.84rem;
}
.apps-content {
    display: -webkit-flex;
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    width: 10.3rem;
    margin: 0 auto 0.2rem;
    padding: 0.8rem 0 0;
    
    background-image: url(./map.png);
    background-repeat: no-repeat;
    background-position: 100% 50%;
    background-size: auto 100%;
}
.apps-icon {
    padding: 0.6rem 0.2rem;
}
.apps-icon img {
    width: 1.46rem;
}

.contact-us {
    margin-top: 2.4rem;
    padding-bottom: 2.4rem;
}
.contact-us-head img{
    width: 1.92rem;
}
.contact-us-mail {
    margin-top: 0.5rem;
}
.contact-us-mail img{
    width: 0.58rem;
}
.contact-us-text {
    margin-top: 0.18rem;
    line-height: 1;
    font-size: 0.3rem;
    color: #666;
}
.contact-us-text p {
    margin: 0;
}
.contact-us-text p a:link, .contact-us-text p a:visited  {
    color: #666;
}


@media screen and (max-width: 640px) {
    .head img {
        width: 10rem;
    }

    .aboutus img {
        width: 7.2rem;
    }

    .content-text {
        padding: 0.9rem 0.6rem;
    }
    .content-text p {
        font-size: 17px;
    }

    .apps-head img {
        width: 7.6rem;
    }
    .apps-content {
        width: 12rem;
    }
    .apps-icon img {
        width: 1.9rem;
    }

    .contact-us-head img {
        width: 3.7rem;
    }
    .contact-us-mail img {
        width: 1.12rem;
    }
    .contact-us-text p {
        font-size: 14px;
    }
}