.h2 {
    font-size: 22px;
    text-align: center;
    margin: 50px 0;
}
.wrap {
    max-width: 1500px;
    width: 95%;
    padding: 0px;
    margin: 0 auto;
    position: relative;
    clear: both;
    overflow: hidden;
}
.case-rec{
    width: auto !important;
}
.case-rec li {
    width: 33.3333333333% !important;
    float: left;
    margin: 0 !important;
}
.case-rec li a {
    margin: 12px 15px;
    display: block;
}
.case-rec li .img {
    width: 100%;
    float: left;
    overflow: hidden;
}
.case-rec li .img img {
    -moz-transition: -moz-transform 1s;
    -o-transition: -o-transform 1s;
    -webkit-transition: -webkit-transform 1s;
    transition: -webkit-transform 1s;
    transition: transform 1s;
    transition: transform 1s, -webkit-transform 1s;
}
.case-rec li .img img {
    float: left;
    width: 100%;
}
.case-rec li .txt {
    float: left;
    width: 100%;
    padding-bottom: 20px;
    background: url(../images/icon-more.png) right center no-repeat;
    background-position: 95% 50%;
}
.case-rec li .tit {
    margin-top: 10px;
    padding: 0 15px;
}
.case-rec li .intro {
    margin-top: 10px;
    padding: 0 15px;
    font-size: 12px;
    color: #a0a0a0;
    white-space: nowrap;
    width: 260px;
    overflow: hidden;
    text-overflow: ellipsis;
}
.case-rec li .img img {
    -moz-transition: -moz-transform 1s;
    -o-transition: -o-transform 1s;
    -webkit-transition: -webkit-transform 1s;
    transition: -webkit-transform 1s;
    transition: transform 1s;
    transition: transform 1s, -webkit-transform 1s;
}

.case-rec li .img img:hover {
    -moz-transform: scale(1.05);
    -ms-transform: scale(1.05);
    -webkit-transform: scale(1.05);
    transform: scale(1.05);
    transition: -webkit-transform 1s;
    transition: transform 1s;
    transition: transform 1s, -webkit-transform 1s;
}

.case-rec li:hover .txt {
    background-color: #108bed;
    color: #fff;
    background-image: url("../images/icon-more-on.png");
    animation-duration: 1s;
    animation-fill-mode: both;
    animation-name: bounceIn;
}

.case-rec li:hover .txt .intro {
    color: #fff;
}

@media (max-width: 720px){
    .h2{
        margin: 20px auto;
    }
    .wrap {
        width: 6.64rem;
        overflow: hidden;
        position: relative;
    }
    
    .case-rec {
        margin-bottom: .5rem;
        width: 6.88rem;
        margin-left: -.12rem;
        overflow: hidden;
    }
    .case-rec li {
        margin: .12rem !important;
        width: 3rem !important;
        height: 2.8rem;
        float: left;
        padding: 0;
        position: relative;
    }
    .case-rec li a{
        margin:0;
    }
    .case-rec li .img img {
        float: left;
        width: 3.2rem;
        height: 2.8rem;
    }
    .case-rec li .txt {
        float: left;
        position: absolute;
        bottom: 0;
        left: 0;
        width: 100%;
        padding-bottom: 0;
        height: .52rem;
        white-space: nowrap;
        overflow: hidden;
        text-overflow: ellipsis;
        font-size: .18rem;
        background-image: none;
        background: rgba(0, 0, 0, .5);
        text-align: center;
        color: #fff;
    }
}