.first_level:not(:last-child) {
  margin-bottom: 2.46rem;
}

.content__explain .cmp__title {
  margin: 0 auto 0.84rem auto;
}

.content_card {
  width: 8.9rem;
  font-size: 0.2rem;
  padding: 0.36rem 0.4rem;
  border-radius: 0.34rem;
  color: #FFF;
  line-height: 0.45rem;
  margin: 0 auto;
  background: linear-gradient(180deg,#282828 9%, #181818 100%);
}

.second_level:not(:last-child) {
  margin-bottom: .64rem;
}

.second_level_title {
  font-size: .36rem;
  font-weight: 700;
  color: #34E494;
  text-align: center;
  margin-bottom: .36rem;
  line-height: 1;
}

.third_level:not(:last-child) {
  margin-bottom: .36rem;
}

.third_level_title {
  font-size: .28rem;
  font-weight: 700;
  color: #34E494;
  margin-bottom: .24rem;
  line-height: 1;
}

.card_li {
  display: flex;
}

.card_li .content {
  flex: 1;
}