.container {
    width: 100%;
    min-height: 64vh;
    min-width: 1200px;
    background-color: #F0F0F0;
    padding-bottom: 50px;
}

/* 顶部背景 */

.topBox {
    width: 100%;
    position: relative;
}
.case_show_title {
    width: 100%;
    margin: 30px 0;
    font-size: 30px;
    text-align: center;
    letter-spacing: 2px;
}
/* tab 切换 */

.bd ul {
    width: 100%;
    overflow: hidden;
}

.bd li {
    float: left;
    width: calc(96% / 3);
    height: 465px;
    margin-right: 2%;
    margin-bottom: 34px;
    background-color: #fff;
    overflow: hidden;
    position: relative;
}

 .bd li:nth-of-type(3n) {
    margin-right: 0;
}

  .bd li img {
    width: auto;
    margin: 60px auto;
}

.bd li div {
    width: 100%;
    text-align: center;
    font-size: 30px;
    font-weight: bold;
    letter-spacing: 2px;
    box-sizing: border-box;
    padding: 0 20px;
}

.bd li a {
    position: absolute;
    left: 50%;
    bottom: 20px;
    transform: translateX(-50%);
    width: 159px;
    height: 44px;
    line-height: 44px;
    text-align: center;
    background: rgba(33, 172, 86, 1);
    border-radius: 2px;
    font-size: 16px;
    color: #FFFEFE;
}