.top_bg {
  background: url(../images/offer/bg.jpg);
  width: 100%;
  height: 300px;
  background-size: cover;
  background-repeat: no-repeat;
  display: flex;
}

.top_bg .box {
  margin: auto;
  text-align: center;
  line-height: 56px;
}

.top_bg .box .name {
  font-weight: bold;
  color: #FFFFFF;
  font-size: 200%;
}

.top_bg .box .desc {
  color: #FFFFFF;
  font-size: 100%;
}

/*  */

.section1 {
  background: #FFFFFF;
  margin: 0 auto;
}

.box_section .box {
  width: 50%;
  margin: 0 auto;
  text-align: center;
  padding: 30px 0;
}

.box_section .box div:nth-child(1) {
  color: #838383;
  font-size: 140%;
  letter-spacing: 2px;
}

.box_section .box div:nth-child(2) {
  color: #343333;
  font-size: 140%;
  margin-top: 10px;
  font-weight: bold;
}

.box_section .box .border {
  background: #E5E5E5;
  width: 40%;
  height: 1px;
  position: relative;
  margin: 0 auto;
  margin-top: 10px;
}

.box_section .box .border::after {
  position: absolute;
  content: '';
  background: #B70081;
  width: 20%;
  height: 4px;
  margin: auto;
  bottom: -2px;
  left: 0;
  right: 0;
}

.section1 .joinus {
  width: 55%;
  margin: 0 auto;
  margin-bottom: 20px;
}

.section1 .joinus .item {
  background: #FAFAFC;
  border-radius: 3px;
  padding: 20px;
  position: relative;
  margin-bottom: 20px;
}

.section1 .joinus .item .num {
  position: absolute;
  right: 20px;
  top: 20px;
  width: 50px;
  height: 50px;
  border-radius: 50px;
  display: flex;
  color: #FFFFFF;
  text-align: center;
}

.section1 .joinus .item .red {
  background: #B70081;
}

.section1 .joinus .item .green {
  background: #5A49FF;
}

.section1 .joinus .item .num span {
  margin: auto;
  line-height: 1;
}

.section1 .joinus .item h4 {
  color: #6C6C6C;
  font-size: 140%;
}

.section1 .joinus .item p {
  color: #6B6B6B;
  font-size: 95%;
}