.banner {
  width: 100%;
  max-width: 1920px;
  height: 640px;
  margin: auto;
  background-color: #f3f3f3;
}

.products {
  width: 75vw;
  max-width: 1440px;
  height: 640px;
  margin: 0 auto;
  padding-top: 2rem;
  color: #636363;
}

.products h2 {
  width: 75vw;
  max-width: 1440px;
  margin: 2rem 1rem;

  font-weight: 600;
  font-size: 2rem;
  text-align: center;
}

.products span {
  width: 75vw;
  max-width: 1440px;
  margin: 1rem auto 3rem;
  height: 3rem;
  font-weight: 600;
  font-size: 1.5rem;
  text-align: center;
  display: block;
}

.products .item {
  margin: auto;
  border: 1px ccc solid;
}

.products .item ul {
  max-width: 1440px;
  display: flex;
  justify-content: space-between;
}

.products .item ul li {
  margin: auto;

  /* overflow: hidden; */
  /* 鼠标悬停放大时 共3个样式1 不会撑开容器 */
}

.products .item ul li img {
  width: 100%;
  height: 100%;
  border: 2px #ccc solid;
  border-radius: 10px;
  transition: all 0.5s linear;
  /* 鼠标悬停放大时 共3个样式2 移开时缩小也按这个时间和方式 */
}

.products .item ul li img:hover {
  width: 100%;
  height: 100%;
  border: 2px #036 solid;
  transform: scale(1.1);
  /* 鼠标悬停放大时 共3个样式3 放大图片 */
}
.products .item ul li h3 {
  text-align: center;
  font-size: 1.25rem;
  font-weight: 600;
  margin-top: 2rem;
}

@media screen and (max-width: 1200px) {
  .banner {
    width: 100vw;
    height: calc(100vw / 16 * 4);
    margin: auto;
    background-color: #f3f3f3;
  }
  .banner .swiper {
    width: 100vw;
    height: calc(100vw / 16 * 4);
    margin: auto;
    background-color: #f3f3f3;
  }

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

  .products {
    width: 100vw;
    height: auto;

    margin: 0 auto;
    padding-top: 2rem;
    color: #636363;
  }

  .products h2 {
    width: 100vw;
    margin: 0 auto;
    font-weight: 500;
    font-size: 1.5rem;
    text-align: center;
  }

  .products span {
    width: 100vw;
    margin: 0 auto 2rem;
    height: 2rem;
    font-weight: 300;
    font-size: 1rem;
    text-align: center;
    display: block;
  }

  .products .item {
    width: 95%;
    height: auto;
    margin: auto;
   
  }

  .products .item ul {
    width: 95%;
    margin: auto;
    display: flex;
    flex-direction: column;
    flex-wrap: wrap;
    justify-content: space-between;
  }

  .products .item ul li {
    width: 95%;
   
    margin:1rem auto;

    /* overflow: hidden; */
    /* 鼠标悬停放大时 共3个样式1 不会撑开容器 */
  }

  .products .item ul li img {
    width: 100%;
    
    border: 2px #ccc solid;
    border-radius: 10px;
    transition: all 0.5s linear;
    /* 鼠标悬停放大时 共3个样式2 移开时缩小也按这个时间和方式 */
  }


  .products .item ul li h3 {

    text-align: center;
    font-size: 1.25rem;
    font-weight: 300;
    margin: 0 0 3rem 0;

  }
}