.content{
    padding: 20px 0;
    box-sizing: border-box;
    overflow: hidden;
}

.li{
    float: left;
    padding: 0 10px 0 0;
    box-sizing: border-box;
    margin-top: 40px;
    position: relative;
    top: 0;
    cursor: pointer;
}

.li:hover{
    transition: all 0.6s;
    top: -3px;
    box-shadow: 0 10px 30px 0 rgba(0,0,0,0.06);
}

.li:nth-child(2n){
    padding:0 0 0 10px
}

.item{
    border: 1px solid #eee;
    padding: 12px;
    box-sizing: border-box;
    overflow: hidden;
}

.item_left{
    float: left;
    width: 253px;
    height: 190px;
}

.item_right{
    width: calc(100% - 273px);
    height: 190px;
    float: right;
}

.item_right_top{
    padding-bottom: 23px;
    box-sizing: border-box;
    border-bottom: 1px solid #eee;
}

.item_time{
    font-size: 14px;
    font-family: MicrosoftYaHei;
    color: #616161;
    line-height: 19px;
    margin-top: 20px
}

.item_title{
    font-size: 16px;
    font-family: PingFangSC-Medium, PingFang SC;
    font-weight: 500;
    color: #212121;
    line-height: 22px;
    margin-top: 17px
}

.item_content{
    margin-top: 13px;
    font-size: 14px;
    font-family: PingFangSC-Light, PingFang SC;
    font-weight: 300;
    color: #616161;
    line-height: 20px;
}

.item_last{
    font-size: 12px;
    font-family: MicrosoftYaHei;
    color: #616161;
    line-height: 16px;
    letter-spacing: 1px;
    margin-top:12px
}

.item_last img{
    width: 32px;
    height: 12px;
    margin-left: 12px;
    margin-top: 4px;
    float: right;
}

.item_last div{
    float: right;
}

@media screen and (max-width: 992px ) and (min-width: 768px){
    .item_left{
        width: 180px;
        height: 136px;
        margin-top: 27px
    }

    .item_right{
        width: calc(100% - 200px)
    }
}

@media screen and (max-width: 768px ){
    .li{
        padding: 0 15px!important;
    }

    .item{
        padding-bottom: 10px;
    }

    .item_left{
        width: 120px;
        height: 96px;
        margin-top: 30px
    }

    .item_right{
        width: calc(100% - 135px)
    }

    .item_time{
        margin-top: 12px;
    }

    .item_title{
        margin-top: 12px;
    }

    .item_content{
        margin-top: 12px
    }

    .item_last{
        margin-top:12px
    }
}