.banner{
    width: 90%;
    margin: auto;
    height: 600px;
    display: flex;
    justify-content: space-between;
    align-content: space-between;
    flex-wrap: wrap;
    flex-direction: column;
    background-color: #fff;
}
.banner img{
    width: 100%;
    height: 70%;
    border-radius: 0px;
}

.bannerLi{
    width: 24%;
    height: 48%;
    cursor: pointer;
}

.bannerLi:nth-of-type(3){
    width: 48%;
    height: 100%;
}
.bannerLi .pDet{
    -webkit-line-clamp: 1;
}

.bannerLi:nth-of-type(3) img{
    height: 85%;
}

@media screen and (max-width:960px) {
    .banner{
        width: 95%;
        flex-direction: row;
        height: auto;
    }
    .bannerLi{
        width: 100%;
        height: auto;
        margin-bottom: 20px;
    }
    .bannerLi img{
        height: 240px;
    }
    .bannerLi:nth-of-type(3){
        width: 100%;
        height: auto;
    }
    .bannerLi:nth-of-type(3) img{
        height: 240px;
    }
}