/*banner*/
.introduction_banner{
    padding:80px 0 0;
    background:url(../img/introduction_banner_bg.jpg) no-repeat bottom center;
    background-size:cover;
    height:260px;
    color:#fff;
}
.introduction_banner .banner_title{
    font-size:44px;
    font-weight:700;
    line-height:50px;
}
.introduction_banner .banner_un_title{
    font-size:20px;
    line-height:30px;
}

.introduction_content{
    padding-bottom:150px;
}
.introduction_content img{
    margin-bottom:30px;
}

.introduction_content p{
    line-height:40px;
    text-indent: 40px;
    color:#777777;
    font-size:16px;
}