*{
    margin: 0;
    padding: 0;
}
.row{
    margin-left: 0px !important;
    margin-right: 0px !important;
}
.banner{
    height: 450px;
    color: #fff;
    position: relative;
}
.banner_txt{
    position: absolute;
    top: 0;
    width: 100%;
    text-align: center;
    height: 100%;
    display: flex;
    flex-direction: column;
    justify-content: center;
}
.banner_txt div:nth-child(1){
    font-size: 54px;
}
.banner_txt div:nth-child(2){
    font-size: 16px;
}
.xinwenlist{
    font-size: 16px;
    max-width: 1400px;
    margin: 0 auto;
}
.xinwendiv{
    display: flex;
    align-items: center;
    margin: 50px 0;
    cursor: pointer;
}
.xw_txt{
    margin-left: 5%;
    width: 100%;
}
.xw_txt div:nth-child(1){
    font-size: 26px;
    font-weight: bold;
    display: -webkit-box;
    -webkit-box-orient: vertical;
    -webkit-line-clamp: 1;
    overflow: hidden;
}
.xw_txt div:nth-child(2){
    line-height: 30px;
    min-height: 150px;
    margin-top: 20px;
    
}
.imgbox{
    min-width: 450px;
    height: calc(450px * 9 / 16);
}
.xiaoping_img{
    display: none;
}
@media (max-width: 1080px) { 
    .banner{
        height: 100%;
    }
    .daping_img{
        display: none;
    }
    .xiaoping_img{
        display: block;
    }
}
@media (max-width: 900px) {
    .xinwendiv{
        flex-direction: column;
    }
    .imgbox{
        min-width: 80vw;
        height: calc(70vw * 9 / 16);
    }
    .xw_txt{
        margin-top: 10px;
    }
    .xw_txt div:nth-child(1) {
        font-size: 18px;
        font-weight: bold;
    }
    .xw_txt div:nth-child(2) {
        font-size: 14px;
    }
}
@media (max-width: 768px) { 
    .banner_txt div:nth-child(1){
        font-size: 25px;
    }
    .banner_txt div:nth-child(2){
        font-size: 14px;
    }
    
}