h2.bt {
  text-align: center;
  font-size: 35px;
  color: #333; }

.c1bg {
  background: #fafafa; }
  .c1bg .c1 {
    padding-top: 37px;
    padding-bottom: 21px; }
    .c1bg .c1 h2 {
      margin-bottom: 30px; }
    .c1bg .c1 .list1 {
      text-align: center;
      margin-bottom: 59px; }
      .c1bg .c1 .list1 li {
        display: inline-block;
        margin: 0 5px;
        border: 1px solid #3a3a3a;
        font-size: 15px;
        background: #fff;
        width: 110px;
        line-height: 40px; }
        .c1bg .c1 .list1 li a {
          color: #333333;
          display: block; }
        .c1bg .c1 .list1 li:hover {
          background: #0050cc;
          border-color: #0050cc; }
          .c1bg .c1 .list1 li:hover a {
            color: #fff; }
    .c1bg .c1 .list2 li {
      float: left;
      margin-right: 26px;
      height:332px; }
      .c1bg .c1 .list2 li:nth-child(4n) {
        margin-right: 0; }
      .c1bg .c1 .list2 li a.img {
        display: block;
        position: relative;
        width: 280px;
        height: 300px;
        overflow: hidden; }
        .c1bg .c1 .list2 li a.img img {
          width: 280px;
          height: 300px; }
        .c1bg .c1 .list2 li a.img h4 {
          font-weight: 500;
          position: absolute;
          width: 100%;
          line-height: 80px;
          font-size: 16px;
          color: #3c3c3c;
          text-align: center;
          z-index: 1;
          bottom: 0; }
        .c1bg .c1 .list2 li a.img h3 {
          position: absolute;
          z-index: 2;
          background: url(../images/ck.png) no-repeat center 0;
          height: 300px;
          width: 280px;
          bottom: -100%;
          transition-duration: 0.6s;
          left: 0;
          font-weight: 500;
          text-align: center;
          color: #fff;
          padding-top: 100px;
          box-sizing: border-box;
          font-size: 20px; }
      .c1bg .c1 .list2 li:hover a.img h4 {
        opacity: 0; }
      .c1bg .c1 .list2 li:hover a.img h3 {
        bottom: 0; }

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