.kf {
    position: fixed;
    right: -77px;
    bottom: 20%;
    width: 77px;
    padding: 0;
    background: #fff;
    display: -webkit-box;
    display: -ms-flexbox;
    display: -webkit-flex;
    display: flex;
    -webkit-box-orient: vertical;
    -ms-flex-direction: column;
    -webkit-flex-direction: column;
    flex-direction: column;
    -webkit-box-align: center;
    -ms-flex-align: center;
    -webkit-align-items: center;
    align-items: center;
    z-index: 999;
    border-top-left-radius: 10px;
    border-bottom-left-radius: 10px;
    -webkit-transition: all 0.3s;
    -o-transition: all 0.3s;
    transition: all 0.3s;
    border: 1px solid #ebebeb;
  }
  .kf.on {
    right: 0px;
  }
  .kf .item {
    position: relative;
    cursor: pointer;
    width: 60px;
    height: 70px;
    display: -webkit-box;
    display: -ms-flexbox;
    display: -webkit-flex;
    display: flex;
    -webkit-box-orient: vertical;
    -ms-flex-direction: column;
    -webkit-flex-direction: column;
    flex-direction: column;
    -webkit-box-pack: center;
    -ms-flex-pack: center;
    -webkit-justify-content: center;
    justify-content: center;
    -webkit-box-align: center;
    -ms-flex-align: center;
    -webkit-align-items: center;
    align-items: center;
    border-bottom: 1px solid #eaeaeb;
  }
  .kf .item.gotop {
    border-bottom: none;
    margin-bottom: 0;
    width: 100%;
    height: 80px;
  }
  .kf .item.gotop .itembox {
    background: transparent!important;
    box-shadow: none!important;
  }
  .kf .item .itembox {
    width: 100%;
    height: 22px;
    margin: 0 auto 8px;
    display: -webkit-box;
    display: -ms-flexbox;
    display: -webkit-flex;
    display: flex;
    -webkit-box-pack: center;
    -ms-flex-pack: center;
    -webkit-justify-content: center;
    justify-content: center;
    -webkit-box-align: center;
    -ms-flex-align: center;
    -webkit-align-items: center;
    align-items: center;
    -webkit-transition: all 0.3s;
    -o-transition: all 0.3s;
    transition: all 0.3s;
    cursor: pointer;
    position: relative;
    z-index: 1;
  }
  .kf .item .itembox img {
    display: block;
  }
  .kf .item p {
    font-size: 14px;
    color: #777777;
    text-align: center;
    width: 100%;
    white-space: nowrap;
  }
  .kf .item .box {
    position: absolute;
    right: -310px;
    height: 70px;
    color: #3a6de1;
    padding: 0 25px;
    text-align: center;
    line-height: 64px;
    font-size: 24px;
    font-family: 'din_b';
    white-space: nowrap;
    top: 50%;
    margin-top: -35px;
    -webkit-transition: all 0.3s;
    -o-transition: all 0.3s;
    transition: all 0.3s;
    border: 1px solid #f0f0f0;
  }
  .kf .item .box2 {
    position: absolute;
    right: -150px;
    width: 120px;
    top: 0%;
    border: 1px solid #f5f5f5;
    background: #ffffff;
    -webkit-transition: all 0.3s;
    -o-transition: all 0.3s;
    transition: all 0.3s;
  }
  .kf .item .box2:before {
    content: '';
    width: 15px;
    height: 15px;
    position: absolute;
    right: -7.5px;
    top: 15px;
    transform: rotate(45deg);
    -ms-transform: rotate(45deg);
    /* IE 9 */
    -moz-transform: rotate(45deg);
    /* Firefox */
    -webkit-transform: rotate(45deg);
    /* Safari 和 Chrome */
    -o-transform: rotate(45deg);
    background: #fff;
    border-top: 1px solid #f5f5f5;
    border-right: 1px solid #f5f5f5;
  }
  .kf .item .box2 img {
    width: 90px;
    height: 90px;
    display: block;
    margin: 15px;
  }
  .kf .item .box2 p {
    font-size: 16px;
    height: 40px;
    line-height: 40px;
    text-align: center;
    color: #333333;
  }
  .kf .item:hover .box {
    right: 68px;
    background: #fff;
  }
  .kf .item:hover .box2 {
    right: 80px;
  }
  .kf .item:hover .box2 p {
    color: #333333;
  }
  .kf .item:hover p {
    color: #3a6de1;
  }
  .kf .item:hover .itembox img {
    display: block;
  }
  /*app-客服*/
  .kefu {
    display: none;
    position: fixed;
    width: 200px;
    overflow: hidden;
    z-index: 400;
    background: rgba(0, 0, 0, 0.5);
    left: 50%;
    margin-left: -100px;
    bottom: 35px;
    padding: 8px 0;
    transition: all 0.5s;
  }
  .kefu li {
    width: 49px;
    float: left;
    border-left: 1px solid #fff;
  }
  .kefu li:first-child {
    border-left: none;
  }
  .kefu li a {
    font-size: 20px;
    display: block;
    margin: 0 auto;
    width: 100%;
    height: 30px;
    text-align: center;
    line-height: 30px;
    color: white;
    background-image: url(../images/wkf1.png);
    background-repeat: no-repeat;
    background-position: center;
  }
  .kefu li:nth-child(2) a {
    background-image: url(../images/wkf2.png);
  }
  .kefu li:nth-child(3) a {
    background-image: url(../images/wkf3.png);
  }
  .kefu li:nth-child(4) a {
    background-image: url(../images/wkf4.png);
  }
  @media (max-width: 768px) {
    .kf {
      display: none;
    }
    .kefu {
      display: block;
    }
  }