.main {
  background: url(./image/bg.png) no-repeat;
  background-position: 0px -100px;
}

.title h2 {
  width: 100%;
  height: 100%;
  font-size: 20px;
  line-height: 2.4rem;
  letter-spacing: 2px;
}


.box {
  width: 100vw;
  height: 400px;
  margin-top: 75px;
  /* position: relative; */
}

.box img {
  max-width: 100%;
  height: auto;
}

.box .img1,
.img2,
.img3,
.img4 {
  position: relative;
  margin: 0 auto;
  display: block;
}

.img1 {
  top: 0.3rem;
  left: 3.3rem;
}

.img2 {
  top: 10rem;
  left: 5.6vw;
}

.img3 {
  top: -3.3rem;
  left: 18.266667vw;
}

.img4 {
  top: -22rem;
  left: 18rem;
}