.banner{
    height: 708px;
    background: url('img_banner.jpg') no-repeat center bottom;
    background-size: cover;
    padding-top: 250px;
}
.banner .title{
    font-size: 62px;
    color: #FFFFFF;
}
.banner .desc{
    max-width: 530px;
    margin-top: 30px;
    font-size: 20px;
    color: #FFFFFF;
    line-height: 34px;
}
.features{
    padding:72px 0 90px;
}
.feature_con{
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
}
.feature_con .item{
    width:32%;
    display: flex;
    margin-top: 74px;
}
.feature_con .item .icon{
    width: 60px;
    height:60px;
    margin-right: 20px;
}
.feature_con .mess{
    flex: 1;
    overflow: hidden;
}
.feature_con .mess .tit{
    font-size: 24px;
    color: #111111;
}
.feature_con .mess .text{
    font-size: 15px;
    color: #727272;
    line-height: 23px;
    margin-top: 20px;
}
.about{
    padding:72px 0 90px;
    border-top: 1px solid #EFEFEF;
}
.about_con{
    padding-top: 38px;
}
.about_con p{
    font-size: 18px;
    color: #333333;
    line-height: 40px;
    margin-bottom: 18px;
}
.about_con .img{
    display: block;
    width: 100%;
    margin-top: 30px;
}
.streamer{
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding:0 15px;
    height: 210px;
    background-color: #007AFF;
}
.streamer .tit{
    font-size: 25px;
    color: #FFFFFF;
    line-height: 28px;
}
.streamer .text{
    font-size: 15px;
    color: #FFFFFF;
    margin-top: 20px;
}
.contact{
    padding:45px 0;
    border-bottom: 1px solid #EFEFEF;
}
.contact_con{
    padding-left: 220px;
    margin-top: 78px;
}
.contact_con .title{
    font-size: 24px;
    color: #111111;
    margin-bottom: 20px;
}
.contact_con .item{
    display: flex;
    align-items: center;
    margin-top: 10px;
}
.contact_con .item .icon{
    width: 16px;
    height: 16px;
    margin-right: 8px;
}
.contact_con .item .text{
    font-size: 15px;
    color: #727272;
}