article {
  background-image: url(../images/pic-bg.jpg);
}
/* 产品列表 */
.pics {
}

.pics ul {
  display: flex;
  flex-wrap: wrap;
}

.pics ul li {
  width: 50%;
  padding: 3px;
}
.pics ul a {
  display: block;
  position: relative;
}
.pics ul i {
  display: block;
  padding: 15px;
}
.pics ul i img {
  width: 100%;
}

.pic-li-more {
  display: none;
}
@media (min-width: 1200px) {
  .pics {
    padding: 1vw;
  }

  .pics ul {
    display: flex;
  }
  .pics ul li {
    width: 25%;
    padding: 1vw;
  }
  .pics ul a {
    display: block;
    position: relative;
  }
  .pics ul i {
    display: block;
    padding: 0.5vw;
  }
  .pics ul i img {
    width: 100%;
  }

  .pic-li-more {
    display: block;
    position: absolute;
    left: 50%;
    top: 50%;
    padding: 1.2vw;
    background: rgba(2, 133, 53, 0.8);
    border-radius: 50%;
    margin: -2.7vw 0 0 -2.7vw;
    opacity: 0;
    transition: 0.3s;
  }
  .pic-li-more span {
    display: flex;
    justify-content: center;
    align-items: center;
    width: 5vw;
    height: 5vw;
    font-size: 0.9vw;
    line-height: 1vw;
    color: #fff;
    background: #028537;
    border-radius: 50%;
  }

  .pics ul a:hover .pic-li-more {
    opacity: 1;
    transform: rotate(360deg);
  }
}