.step_mask {
  width: 100%;
  height: 100%;
  position: fixed;
  top: 0;
  left: 0;
  background: #000;
  opacity: 0.2;
  overflow: hidden;
  z-index: 998;
}
.step {
  position: relative;
  width: 1200px;
  height: 100%;
  margin: 0 auto;
}
.step_1 {
  width: 450px;
  height: 350px;
  position: absolute;
  z-index: 999;
  top: -142px;
  left: 24%;
}
.step_img {
  width: 100%;
  height: 100%;
}

.step_1_close {
  top: 110px;
  width: 28px;
  height: 28px;
  right: 36px;
}
.step_1_skip {
  top: 283px;
  width: 70px;
  height: 35px;
  right: 233px;
}
.step_1_next {
  top: 283px;
  width: 70px;
  height: 35px;
  right: 150px;
}


.step_2 {
  width: 600px;
  height: 371px;
  position: absolute;
  z-index: 999;
  top: 0px;
  left: 15%;
}

.step_2_close {
  top: 80px;
  width: 28px;
  height: 28px;
  right: 86px;
}
.step_2_skip {
  top: 245px;
  width: 70px;
  height: 35px;
  right: 265px;
}
.step_2_next {
  top: 245px;
  width: 70px;
  height: 35px;
  right: 187px;
}


.step_3 {
  width: 663px;
  height: 439px;
  position: absolute;
  z-index: 999;
  top: 18px;
  left: 29%;
}
.step_3_close {
  top: 80px;
  width: 28px;
  height: 28px;
  right: 163px;
}
.step_3_skip {
  top: 280px;
  width: 70px;
  height: 35px;
  right: 374px;
}
.step_3_next {
  top: 280px;
  width: 70px;
  height: 35px;
  right: 293px;
}


.step_4 {
  width: 683px;
  height: 543px;
  position: absolute;
  z-index: 999;
  top: -120px;
  left: 48%;
}
.step_4_close {
  top: 144px;
  width: 28px;
  height: 28px;
  right: 85px;
}
.step_4_complete {
  top: 414px;
  width: 102px;
  height: 35px;
  right: 360px;
}
.step_default {
  position: absolute;
  cursor: pointer;
  font-size: 0;
}