.banner {
  position: relative;
}

.banner_box {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
}

.banner_title {
  color: #fff;
  font-size: 48px;
  font-weight: 700;
}

.product {
  padding-top: 142px;
  padding-bottom: 390px;
}

.product_list {
  margin-top: 83px;
  display: grid;
  grid-column-gap: 15px;
  grid-row-gap: 15px;
  grid-template-columns: 1fr 1fr 1fr 1fr 1fr;
  text-align: center;
}

.product_list_img {
  position: relative;
  padding-bottom: 100%;
  background-color: #e5e3e3;
}

.product_list_img img {
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  width: 50%;
  height: 50%;
  object-fit: cover;
}

/* 手机样式 */
@media screen and (max-width: 900px) {
  .banner {
    height: 4.25rem;
    display: flex;
    align-items: center;
    justify-content: center;
  }

  .banner img {
    width: auto;
    height: 100%;
  }

  .banner_title {
    font-size: 0.58rem;
  }

  .product {
    padding-top: 1.1rem;
    padding-bottom: 2.2rem;
  }

  .product_list {
    grid-column-gap: 0.3rem;
    grid-row-gap: 0.3rem;
    grid-template-columns: 1fr 1fr;
  }
}