.page-wrapper {
  background: url('../../imgs/know/bg.png') no-repeat left 1440px;
  background-size: contain;
  padding-bottom: 110px;
}
.service-box {
  width: 1200px;
  margin: 0 auto;
  padding-left: 300px;
  box-sizing: border-box;
  padding-top: 84px;
  display: flex;
  align-items: center;
  flex-direction: column;
  justify-content: center;
}
.service-box .box1 {
  display: flex;
  align-items: center;
  justify-content: space-around;
  margin-bottom: 86px;
}
.box1-item{
  text-align: center;
} 
.box2 {
  width: 100%;
  display: flex;
  align-items: flex-end;
  justify-content: space-around;
  height: 386px;
}
.shu {
  width: 1px;
  height: 94px;
  background-color: #4D4D4D;
}