.about_main{
    height: 630px;
    background: url("../images/banner.jpg");
    background-size: 100% 100%;
    position: relative;
}
.banner_div{
    width: 100%;
    height: 100%;
    position: absolute;
    top: 0;
    left: 0;
    z-index: 11;
    background-color: rgba(0, 0, 0, 0.19);
}
.banner_txt_div{
    width: 100%;
    height: 100%;
    position: absolute;
    top: 0;
    left: 0;
    z-index: 15;
}
.banner_txt{
    width: 700px;
    height: 360px;
    margin: 120px 0 120px 0;
    color: #ffffff;
    position: relative;
}
.banner_txt h4{
    font-size: 40px;
    letter-spacing: 2px;
}
.banner_txt p{
    font-size: 18px;
    text-align: justify;
    padding-right: 150px;
    font-weight: 500;
}

/* 团队 */
.team_main{
    padding: 80px 0;
    min-height: 600px;
    background-color: #eaecef;
}
.team_title{
    height: 50px;
    line-height: 50px;
    text-align: center;
}
.team_title h4{
    margin: 0;
    font-size: 40px;
}
.team_content ul{
    margin: 0;
    padding: 0;
    list-style-type: none;
}
.team_content ul:first-child{
    margin: 0 10%;
}
.team_content ul:first-child>li{
    width: 25%;
}
.team_content li{
    float: left;
    margin: 4rem 0 0 0;
    padding: 0 3rem;
    width: 20%;
    text-align: center;
}
.team_content img{
    width: 100%;
    max-width: 100%;
}
.team_content p{
    margin: .5rem 0 0 0;
    font-weight: 400;
    font-size: 14px;
}
.team_content h5{
    margin: .5rem 0 0 0;
    font-weight: 400;
    font-size: 16px;
}

/* 团队介绍 */
.team_desc_main{
    min-height: 400px;
    padding: 80px 0;
    background: url("../images/team_bg.jpg");
    background-size: 100% 100%;
}
.desc_title{
    margin: 0;
    line-height: 50px;
    font-size: 40px;
}
.desc_content p{
    margin: 0;
    padding: 30px 130px 20px 0;
    line-height: 20px;
    text-align: justify;
}

/* 联系我们 */
.us_main{
    min-height: 450px;
    padding: 80px 0;
    background-color: #eaecef;
}
.us_title h4{
    margin: 0;
    line-height: 36px;
    font-size: 20px;
}
.us_content{
    padding-top: 30px;
    font-size: 18px;
    line-height: 50px;
}
.us_content div{
    padding: 0 10px 0 0;
}
.us_content i,.us_address i{
    width: 20px;
    height: 20px;
    font-size: 20px;
    text-align: center;
}
.us_address{
    margin: 0;
    line-height: 60px;
    font-size: 20px;
}