.hdcss
{
    width:1480px;
    margin:20px auto;
    padding-bottom:50px;
}
    .hdcss .hdul {
    }
    .hdcss .hdli {
        display: block;
        float: left;
        width: 478px;
        margin-right: 23px;
        margin-bottom: 23px;
    }
        .hdcss .hdli:nth-child(3n+3) {
            margin-right: 0px;
        }
    .hdcss .hdimg {
        position: relative;
    }
        .hdcss .hdimg img {
            display: block;
            width: 100%;
            height: 358px;
            border-radius: 4px;
        }
    .hdcss .hdpram {
        position: absolute;
        z-index: 2;
        left: 0px;
        top: 0px;
        right: 0px;
        bottom: 0px;
        display: flex;
        justify-content: center;
        flex-direction: column;
        align-items: center;
        color: #FFF;
    }
    .hdcss .hdnm {
        height: 30px;
        line-height: 30px;
        font-size: 23px;
        padding: 0 10px;
        text-align: center;
    }
    .hdcss .hddate {
        margin-bottom: 5px;
    }
    .hdcss .dtzz {
        position: absolute;
        z-index: 1;
        left: 0px;
        top: 0px;
        right: 0px;
        bottom: 0px;
        background-color: #000;
        opacity: 0.6;
        border-radius: 4px;
    }
    .hdcss .hdli:hover .dtzz {
        height: 40px;
        top: unset !important;
    }
    .hdcss .hdli:hover .hddate {
        display: none;
    }
    .hdcss .hdli:hover .hdpram {
        height: 40px;
        top: unset !important;
        line-height: 40px;
    }