@keyframes i_scroll_top_hover {
  0% {
    transform: translateX(-17px) translateY(-188px)
  }

  50% {
    transform: translateX(-17px) translateY(-198px)
  }

  100% {
    transform: translateX(-17px) translateY(-188px)
  }
}

@keyframes i_scroll_top_exec {
  from {
    display: block;
    transform: translateX(-17px) translateY(-188px)
  }

  to {
    display: block;
    transform: translateX(-17px) translateY(-110vh)
  }
}

.i_scroll_top {
  position: fixed;
  bottom: 30px;
  right: 138px;
  display: none;
  height: 144px;
  width: 32px;
  color: #333333;
  .i_s_t_fly {
    height: 68px;
    width: 32px;
    //background: url(./images/huojian.png);
    transform: translateX(-8px) translateY(-188px);
    z-index: 500;
    display: none;
  }
  &:hover {
    .i_s_t_fly {
      display: block;
    }
  }

  .i_s_t_mobile {
    height: 64px;
    width: 32px;
    background-color: #3ecda6;
    //background-image: url(./images/shouji.png);
    background-repeat: no-repeat;
    background-position: center;
    border: 0;
    border-bottom: 1px solid #119877;
    border-radius: 3px 3px 0 0;
    .i_s_t_code {
      //background: url(./images/erweima.png) center no-repeat;
      width: 127px;
      height: 127px;
      display: none;
    }
    &:hover {
      .i_s_t_code {
        display: block;
        transform: translateX(36px);
      }
    }
  }

  .i_s_t_text {
    height: 80px;
    background: #3ecda6;
    width: 32px;
    padding: 0 8px;
    color: #FFFFFF;
    line-height: 18px;
    border-radius: 0 0 3px 3px;
    &:hover {
      .i_s_t_fly {
        width: 46px;
        //background: url(./images/huojian_click.png);
        animation: i_scroll_top_hover 1s infinite;
      }

      .i_s_t_fly.active {
        width: 46px;
        //background: url(./images/huojian_click.png);
        animation: i_scroll_top_exec 1s cubic-bezier(0.58, 0.04, 0.69, 1.25) infinite;
      }
    }
  }


}

@media screen and (min-width: 1500px) {
  .i_scroll_top {
    display: block;
  }
}


@media screen and (max-width: 1500px) {
  .i_scroll_top {
    display: block;
    bottom: 0;
    right: 0;
  }
}