@media screen and (max-width:1260px) {
    .w_12 {
        margin: 0 auto;
        width: 95%;
    }
    .main1 .swiper-container {
        width: 95%;
    }
    .main2 .swiper-container {
        width: 95%;
    }
    .main1 .swiper-slide .words_contain {
        width: 80%;
    }
    .main3_left {
        width: 45%;
    }
    .main3_right {
        width: 50%;
    }
    .main3 .swiper-container {
        width: 160%;
        padding-left: 10%;
    }
    .main4 .list {
        width: 95%;
    }
    .main4 .list li {
        width: 48%;
        margin: 0 1%;
    }
    .main1 .swiper-slide a {
        margin: 0;
    }
    .main1 {
        padding-top: 20px;
    }
    .main2 {
        padding-top: 20px;
        padding-bottom: 20px;
    }
    .main3 {
        padding-top: 20px;
        padding-bottom: 20px;
    }
    .main4 {
        padding-top: 20px;
        padding-bottom: 0;
    }
    .main1 .swiper-slide .words_contain {
        width: 95%;
    }
}

@media screen and (max-width:750px) {
    .lb {
        width: 100%;
        height: 330px;
        background-size: auto 100% !important;
    }
    .w_12 {
        width: auto;
        margin: 0 0.24rem;
    }
    .main1 .swiper-container {
        width: auto;
        margin: 0.2rem 0.24rem;
    }
    .main2 .swiper-container {
        width: auto;
        margin-left: 0.24rem;
        margin-right: 0.24rem;
        height: 200px;
    }
    .main2 .swiper-slide a {
        margin: 0;
    }
    .main3_left {
        display: none;
    }
    .main3_right {
        width: 100%;
        float: none;
    }
    .main4 .list li {
        width: 100%;
        margin: 0 auto 0.24rem;
    }
    .channel_top {
        font-size: 20px;
        padding-bottom: 0.1rem;
        background: none;
    }
    .main1 {
        padding-top: 0.2rem;
    }
    .main2 {
        padding-top: 0.2rem;
        padding-bottom: 0.2rem;
    }
    .main3 {
        padding-top: 0.2rem;
        padding-bottom: 0.2rem;
    }
    .main4 {
        padding-top: 0.2rem;
        padding-bottom: 0;
    }
    .main2 .swiper-slide .time {
        margin-top: 0.2rem;
        margin-bottom: 0.2rem;
    }
    .main2 .swiper-slide .line {
        display: none;
    }
    .main2 .swiper-slide .title {
        margin-bottom: 0.2rem;
    }
    .main2 .swiper-slide .summary {
        margin-bottom: 0.2rem;
    }
    .main3_right .title {
        margin-top: 0.2rem;
        font-size: 20px;
        text-align: center;
    }
    .main3_right .line {
        display: none;
    }
    .main3_right .summary {
        margin-top: 0.2rem;
    }
    .main3_right .more {
        margin: 0.2rem auto 0;
    }
    .main4 .channel_name {
        font-size: 20px;
        border: none;
    }
}