.warp{
    margin:50px auto;
}
.title{
    font-size:40px;
    color:#333333;
    font-weight: 500;
    text-align: center;
    margin-bottom:35px;
}
.text{
    font-size:16px;
    text-align: center;
}
.liucheng{
    width:100%;
    background:url('./image/liucheng.png') center no-repeat;
}
.listbox{
    margin-top:50px;
    width:100%;
    display: flex;
    justify-content: flex-start;
    align-items: center;
    flex-wrap: wrap;
}
.listbox .li_box{
    margin-bottom:30px;
    height:235px;
}
.oa_list_box .li_box{
    height:200px;
}
.li_box .li_top{
    display: flex;
    justify-content: flex-start;
    align-items: center;
    margin-bottom:20px;
}
.li_box .li_top .li_img{
    width:54px;
    height:54px;
    flex-shrink: 0;
    margin-right:20px;
}
.li_box .li_top .li_tit{
    font-size:20px;
    font-weight: 400;
    color:#333333;
}
.li_box .li_text{
    font-size:16px;
    color:#666666;
    line-height: 26px;
    text-align: left;
}
@media screen and (min-width: 1200px) {
    .warp{
        width: 1200px;
    }
    .listbox .li_box{
        width: 21%;
        margin-right: 5%;
    }
    .listbox .li_box:nth-child(4n) {
        margin-right: 0;
    }
}
@media screen and (max-width: 1200px) and (min-width: 1000px) {
    .warp {
        width: 900px;
    }

    .listbox .li_box {
        width: 30%;
        margin-right: 5%;
    }

    .listbox .li_box:nth-child(3n) {
        margin-right: 0;
    }
}
@media screen and (max-width: 1000px) and (min-width: 768px) {
    .warp {
        width: 600px;
    }
    .listbox .li_box {
        width: 47%;
        margin-right: 6%;
    }
    .listbox .li_box:nth-child(2n) {
        margin-right: 0;
    }
}
@media screen and (max-width: 768px) {
    .warp {
        width: 80%;
    }

    .listbox .li_box {
        width: 100%;
    }
}