.first_title {
    text-align: center;
}

.second_title {
    text-align: center;
}

.content-img {
    width: 100%;
}

.section-banner {
    margin: 0px;
    padding: 5px;
}

.section-banner .content-img {
    width: 100%;
    min-height: 70vh;
}

.section-banner .banner {
    margin: 0px;
    min-height: 200px;
    width: 100%;
    white-space: nowrap;
    overflow: hidden;
    text-align: center;
}

.content-item {
    display: inline-block;
    cursor: pointer;
}

.section-main-nav {
    padding: 0;
    padding-top: 20px;
    text-align: center;
}

.section-main-nav .first_title {
    font-size: 16px;
    text-align: left;
    margin-bottom: 0;
}

.section-main-nav .second_title {
    margin: 0px;
    padding: 0;
    font-size: 12px;
    text-align: left;
}

.section-main-nav .content-item {
    min-width: 220px;
    min-height: 60px;
}

.section-main-nav .main-nav-img {
    width: 40px;
    height: 40px;
    background-position: center;
    background-size: 100%;
    float: left;
    margin-right: 10px;
}

.section-banner .content-item {
    min-width: 100%;
    position: absolute;
    background-position: center;
    background-size: contain;
}

.service_items .content-item {
    margin-bottom: 10px;
}

.service_items .content-img {
    width: 100%;
}

.core_team {
    height: 285px;
    width: 100%;
    white-space: nowrap;
    overflow: hidden;
    text-align: center;
}

.core_team .avatar {
    width: 200px;
    height: 200px;
    border-radius: 50%;
    background-position: center;
    background-size: 100%;
    background-repeat: no-repeat;
}

.core_team .content-item {
    margin-left: 10px;
    min-width: 220px;
    min-height: 220px;
}

@keyframes row-right-to-left {
    0% {
        left: 40%;
    }
    99.99999999% {
        left: -180%;
    }
    100% {
        left: 40%;
    }
}

@keyframes scoll {
    from {
        left: 0;
    }
    to {
        left: -200%;
    }
}

.core_team .content-group {
    list-style: none;
    width: 200%;
    left: 0;
    top: 0;
    position: relative;
    display: inline-block;
}

.core_team .content-group-real {
    -webkit-animation: scoll 20s linear 0s infinite;
    animation: scoll 20s linear 0s infinite;
}

.core_team .content-group-copy {
    -webkit-animation: scoll 20s linear 0s infinite;
    animation: scoll 20s linear 0s infinite;
}

.core_team:hover .content-group {
    cursor: pointer;
    /*动画暂停播放*/
    -webkit-animation-play-state: paused;
}

.section-about_us .about_content {
    background: rgb(29, 23, 12);
    text-align: center;
    width: 80%;
    margin: 10px auto;
    padding: 20px;
    border: 30px solid rgba(23, 19, 16, 1);
    box-shadow: -6px 4px 10px #000000;
}

.section-about_us {
    padding-top: 0px;
}

@media screen and (max-width:767px) {
    .section-banner .content-img {
        min-height: 28vh;
    }
    .bg-default {
        background-size: cover;
    }
    p {
        font-size: 0.8em;
    }
    .first_title {
        font-size: 1.2em;
    }
    .second_title {
        font-size: 1em;
    }
}