.tzjd-item p{
    position: absolute;
    width: 270px;
    height: 190px;
    text-align: center;
    line-height: 190px;
    margin: 50px 50px 20px 50px;
    background-color: #000;
    opacity: 0.5;
    color: #fff;
}
.tzjd-item img {
    position: absolute;
}
.tzjd-item{
width:370px;
height:260px;
}