.tier-nav-wrap img {
  vertical-align: middle;
}

.tier-nav-wrap img {
  border: 0;
}

@media screen and (max-width: 768px) {
  .top {
    display: none;
  }

  .tier-nav-wrap {
    display: block;
  }

  .tier-nav-wrap {
    display: block;
    position: relative;
    width: 100%;
    top: 0rem;
  }

  .tier-nav-wrap .goback_mob {
    position: absolute;
    left: 4%;
    top: 0;
    height: 100%;
  }

  a {
    color: #9d1f19;
    text-decoration: none;
  }

  .tier-menu_nr a {
    /* color: #9d1f19 !important; */
    text-decoration: none;
  }

  a {
    background-color: transparent;
  }

  .tier-nav {
    height: 3rem;
    border-bottom: 1px solid #eaeaea;
    box-sizing: border-box;
    padding-left: 0.32rem;
    padding-right: 0.32rem;
    line-height: 0.96rem;
    position: static;
    z-index: 99999;
    width: 100%;
    background: white;
  }

  .tier-nav a {
    /* float: left; */
    color: #231816;
    font-weight: bold;
    display: flex;
    text-align: center;
    font-size: 1.8rem;
    justify-content: center;
    align-items: center;
    height: 100%;
  }

  .tier-nav span {
    display: block;
    width: 16px;
    height: 16px;
    margin: 0 auto;
    cursor: pointer;
    position: absolute;
    right: 4%;
    top: 8px;
  }

  .tier-nav_bg {
    position: absolute;
    min-height: 48px;
    position: absolute;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
  }

  .tier-menu_nr {
    max-height: 0;
    width: 100%;
    box-sizing: border-box;
    background: white;
    overflow: hidden;
    visibility: hidden;
    transition: max-height 0.5s cubic-bezier(0.28, 0.11, 0.32, 1) 0.4s, visibility 0s linear 1s;
    position: absolute;
    z-index: 555;
  }

  .tier-menu_nr.cur {
    -webkit-overflow-scrolling: touch;
    overflow: auto;
    max-height: calc(100vh - 48px - 48px);
    max-height: -ms-calc(100vh - 48px - 48px);
    max-height: -moz-calc(100vh - 48px - 48px);
    max-height: -o-calc(100vh - 48px - 48px);
    max-height: -webkit-calc(100vh - 48px - 48px);
    visibility: visible;
    transition-delay: 0.2s, 0s;
  }

  .tier-menu_nr .tier-menu {
    transition: opacity 0.7s cubic-bezier(0.23, 1, 0.32, 1) 0.2s, -webkit-transform 1s cubic-bezier(0.23, 1, 0.32, 1) 0.5s;
    opacity: 0;
    transform: translate3d(0, 0, 0);
    padding-left: 0;
    border-bottom: none;
  }

  .tier-menu_nr.cur .tier-menu {
    opacity: 1;
    transform: translate3d(0, 0, 0);
    transition-delay: 0.2s, 0.4s;
    width: 100%;
    height: 80px;
    padding-left: 0;
    border-bottom: none;
  }

  .tier-menu li {
    opacity: 0;
    transition: 0.5s ease;
    transform: translate3d(0, 0, 0);
    height: 1.2rem;
    border-bottom: 1px solid #eaeaea;
    background: white;
    width: 50%;
    float: left;
    list-style: none;
  }

  .tier-menu_nr .tier-menu li,
  .tier-menu_nr .tier-menu li:nth-of-type(2) {
    transition-delay: 0.07s;
  }

  .tier-menu_nr.cur .tier-menu li,
  .tier-menu_nr.cur .tier-menu li:nth-of-type(2) {
    transition-delay: 0.77s;
  }

  .tier-menu_nr.cur .tier-menu li {
    opacity: 1;
    transform: translate3d(0, 0, 0);
    height: 40px;
    border-bottom: none;
    display: flex;
    align-items: center;
  }

  .tier-menu li a {
    line-height: 1.2rem;
    display: flex;
    width: 100%;
    height: 100%;
    text-align: center;
    justify-content: center;
    align-items: center;
  }

  .tier-nav-wrap .goback_mob img {
    display: block;
    height: 55%;
    position: relative;
    top: 20%;
  }
}

@media screen and (min-width: 769px) {
  .top {
    display: block;
  }

  .tier-nav-wrap {
    display: none;
  }
}