.free {
  max-width: 850px;
  margin: 3rem auto;
}
.swiper {
  width: 1100px;
}
.swiper-slide img {
  width: 100%;
}
h1 {
  font-size: 2rem;
  font-weight: bold;
  line-height: 1.5;
  padding: 0;
  margin: 0 auto 2rem;
  color: #333;
  width: 1100px;
  margin: 0 auto;
}
@media screen and (max-width: 767px) {
  .free {
    max-width: 100%;
  }
  .swiper {
    width: 100%;
  }
  .swiper-slide img {
    width: 100%;
  }
  h1 {
    width: 100%;
  }
}