.tsxh .zbox {
    padding: 30px 0;
}

.tsxh .zbox h2 {
    font-size: 30px;
    text-align: center;
}

.tsxh .zbox ul li {
    margin-top: 20px;
    float: left;
    width: 24%;
    margin-left: 1.3%;
}

.tsxh .zbox ul li:nth-child(4n+1) {
    margin-left: 0;
}

.tsxh .zbox ul li .img {
    width: 100%;
    height: 200px;
    overflow: hidden;
}
.tsxh .zbox .btnn {
    width: 200px;
    height: 50px;
    background-color: #0c97ee;
    font-size: 20px;
    line-height: 50px;
    color: #fff;
    text-align: center;
    margin: 0 auto;
    cursor: pointer;
    border-radius: 5px;
    margin-top: 30px;
}