.sjyc{
display:none;}

.xb ul{
    display: flex;
    flex-direction: row;
    flex-wrap: wrap;
    padding-bottom: 44px;
    border-bottom: 1px solid #d2d2d2;}
.xb ul li{
    width: 19%;
    margin: 20px 3%;}
.xb ul li .img{
    width: 100%;
    margin-bottom: 20px;
    transition: All 0.5s ease;
    -webkit-transition: All 0.5s ease;
    -moz-transition: All 0.5s ease;
    -o-transition: All 0.5s ease;
    position: relative;
    padding-top: 160%;}
.xb ul li .img img{
    width: 100%;
    height: 100%;
    object-fit: cover;
    position: absolute;
    top: 0;}
.xb ul li .bt{
    font-size: 18px;
    color: #000;
    line-height: 24px;
    margin-bottom: 15px;
    font-weight: bold;}
.xb ul li .sj{
    font-size: 14px;
    color: #003a8e;
    text-indent: 19px;
    background: url(images/sj.png) no-repeat left center;
    font-weight: bold;}
.xb ul li:hover .img{box-shadow:0 0 17px #999;}

@media screen and (max-width: 960px){
.xb ul li {
    width: 27.3333%;}
}
@media screen and (max-width: 620px){
.xb ul li {
    width: 44%;}
}