.ul-list2-t .con1 {
    overflow: hidden;
    padding: 0 !important;
    position: relative;
}
.li1Img {
    width: 100%;
    height: 100%;
}
.ul-list2-t .con1 .blackHover{
    background-color: rgba(0,0,0,0.5);
    width: 100%;
    height: 100%;
    position: absolute;
    left: 0;
    top: 0;
    transition: background-color 0.5s ease;
}

.ul-list2-t .con1 .li1Title {
    position: absolute;
    width: 100%;
    text-align: center;
    font-size: 1.4vw;
    font-family: SourceHanSansCN, SourceHanSansCN;
    font-weight: bold;
    color: #FFFFFF;
    left: 0;
    top: 40%
}

.ul-list2-t li:hover .con1 .blackHover{
    background-color: rgba(0,0,0,0.8);
}