@media screen and (min-width: 768px) {
  .main {
    .service {
      margin-top: 140px;
      .container {
        display: -webkit-box;
        display: -ms-flexbox;
        display: flex;
        -webkit-box-pack: justify;
        -ms-flex-pack: justify;
        justify-content: space-between;
      }

      .item {
        width: 558px;
      }

      .cover {
        width: 558px;
        height: 418px;

        img {
          display: block;
          width: 100%;
          height: 100%;
        }
      }
      .content {
        .title {
          font-size: 24px;
          font-weight: bold;
          margin: 40px 0 16px;
        }
        .detail {
          text-align: justify;
          line-height: 32px;

          .mr40 {
            margin-right: 40px;
          }

          span {
            color: #505050;
            margin-right: 25px;

            &::before {
              content: '';
              display: inline-block;
              vertical-align: -5px;
              width: 20px;
              height: 20px;
              background: url(/img/icon-right.png) no-repeat center;
              background-size: 20px;
              margin-right: 8px;
            }
          }
        }
      }
    }

    .about {
      height: 600px;
      background: url(/img/product-kestos-bg-about.png) no-repeat center;
      background-size: auto 600px;
      padding-top: 128px;
      text-align: center;
      -webkit-box-sizing: border-box;
      box-sizing: border-box;
      margin-top: 140px;
      .title {
        font-size: 24px;
        color: #fff;
      }
      .line {
        width: 32px;
        height: 2px;
        background-color: #fff;
        margin: 64px auto;
      }
      .description {
        width: 804px;
        font-size: 16px;
        line-height: 48px;
        margin: 0 auto;
        color: #fff;
      }
    }
  }

  .footer {
    margin-top: 0;
  }
}

@media screen and (max-width: 768px) {
  .main {
    .service {
      .container {
        display: -webkit-box;
        display: -ms-flexbox;
        display: flex;
        -webkit-box-pack: justify;
        -ms-flex-pack: justify;
        justify-content: space-between;
        -webkit-box-orient: vertical;
        -webkit-box-direction: normal;
        -ms-flex-direction: column;
        flex-direction: column;
        -webkit-box-align: center;
        -ms-flex-align: center;
        align-items: center;
      }

      .item {
        width: 5.58rem;
      }

      .cover {
        width: 5.58rem;
        height: 4.18rem;
        margin-top: 1.2rem;

        img {
          display: block;
          width: 100%;
          height: 100%;
        }
      }
      .content {
        .title {
          font-size: 0.34rem;
          font-weight: bold;
          margin: 0.32rem 0 0.16rem;
        }
        .detail {
          text-align: justify;
          line-height: 0.48rem;
          font-size: 0.26rem;

          .mr40 {
            margin-right: 0.4rem;
          }

          li {
            margin-top: 0.24rem;
          }

          span {
            color: #505050;
            margin-right: 0.25rem;
            font-size: 0.24rem;

            &::before {
              content: '';
              display: inline-block;
              vertical-align: -0.06rem;
              width: 0.32rem;
              height: 0.32rem;
              background: url(/img/icon-right.png) no-repeat center;
              background-size: 0.32rem;
              margin-right: 0.08rem;
            }
          }
        }
      }
    }

    .about {
      background: url(/img/product-kestos-bg-about.png) no-repeat center;
      background-size: cover;
      text-align: center;
      -webkit-box-sizing: border-box;
      box-sizing: border-box;
      margin-top: 1.2rem;
      padding: 0.24rem 0;
      .title {
        font-size: 0.26rem;
        color: #fff;
      }
      .line {
        width: 0.32rem;
        height: 0.02rem;
        background-color: #fff;
        margin: 0.16rem auto;
      }
      .description {
        width: 6.12rem;
        font-size: 0.24rem;
        line-height: 0.48rem;
        margin: 0 auto;
        color: #fff;
        text-align: center;
      }
    }
  }

  .footer {
    margin-top: 0;
  }
}