.black-bg{
     background: url(../images/zhaoshang-bg.jpg) no-repeat;
    background-size: 100% 100%;
    position: relative;
    padding-bottom: 50px;
}
.zhaoshang-banner{
    width: 100%;
}
.banner-txt{
    width: 100%;
    box-sizing: border-box;
    padding:0 25px;
}
.content{
    margin-top: 55px;
}
.title{
    width: 208px;
    background: url(../images/title-bg.png) no-repeat center;
    height: 40px;
    background-size: 100% 100%;
    font-size: 20px;
    text-align: center;
    line-height: 40px;
    position: absolute;
    left: 50%;
    margin-left: -104px;
    top: -7px;
}
.zhaoshang-bg1{
    background: url(../images/zhaoshang-bg1.png) no-repeat;
    /* width: 100%; */
    background-size: 100% 100%;
    min-height: 105px;
    margin: 0 50px;
    padding: 60px 10px 20px;
}
.ul-1 li{
    display: flex;
    align-items: center;
    line-height: 26px;
    font-size: 14px;
}
.ul-1 li img{
width: 8px;
height: 8px;
margin-right: 13px;
}
.content-1{
    position: relative;
}
.title2{
    width: 308px;
    background: url(../images/title-bg.png) no-repeat center;
    height: 55px;
    background-size: 100% 100%;
    font-size: 30px;
    text-align: center;
    line-height: 55px;
  margin:30px auto 0;
}
.zhaoshang-bg2{
     background: url(../images/zhaoshang-bg2.png) no-repeat;
    /* width: 100%; */
    background-size: 100% 100%;
    min-height: 105px;
    margin: 0 50px;
    padding: 60px 10px 40px;
}
.img-txt2 img{
    width: 100%;
}
.guanggao-title{
     background: url(../images/arrow-title.png) no-repeat;
    background-size: 100% 100%;
text-align: center;
line-height: 60px;
     width: 223px;
     height: 60px;
     color: #fff;
     font-size: 20px;
     transform: translateX(-55px);
}
.guangao-h1{
    text-align: center;
    font-size: 16px;
    margin: 10px 0px;
}
.us-provide{
    display: flex;
    justify-content: space-around;
    /* align-items: center; */
}
.us-provide .zhaoshang-icon{
    width: 30px;
    height: 30px;
    margin-bottom: 10px;
}
.us-provide li{
    text-align: center;
    font-size: 12px;
}
.line{
    height: 42px;
    transform: translateY(15px);
}
.back{
    position: absolute;
    left: 20px;
    top: 20px;
}
.back img{
    width: 20px;

}
.menu{
    position: absolute;
    right: 20px;
    top: 20px; 
    width: 25px;
}