@media screen and (max-width: 720px) {
  :root {
    font-size: 20.57142857px;
  }
  .test-area-introduction {
    width: 100%;
    height: 100%;
  }
  .smalltitle {
    width: 100%;
    height: 100%;
    font-size: 1rem;
    margin: auto;
    margin-top: 1rem;
  }
  .rectangle-1 {
    margin: auto;
    margin-top: 0.5rem;
  }
  .test-area-introduction-text1,
  .test-area-introduction-text2,
  .free-trade-area-text1,
  .free-trade-area-text2 {
    width: 90%;
    margin: auto;
    margin-top: 1rem;
    font-size: 16px;
  }
  .swiper {
    min-width: 0px;
    width: 100%;
    height: 20%;
  }
  .swiper-slide img {
    width: 100%;
    height: 230px;
  }
  .free-trade-area {
    width: 100%;
    height: 100%;
    margin-bottom: 1rem;
  }
  .img1 img,
  .img2 img {
    width: 100%;
    height: 100%;
    margin: auto;
    margin-top: 1rem;
  }
}
/* 在 600 像素或更小的屏幕上，将背景色设置为橄榄色 */
@media screen and (max-width: 600px) {
  :root {
    font-size: 17.14285714px;
  }
}