.title-a {
  line-height: 0.5rem;
  text-align: center;
  font-size: 0.3rem;
  color: rgb(63, 62, 62);
  font-weight: bold;
}
.big {
  margin-right: 0.3rem;
  margin-top: 0.12rem;
  line-height: 0.4rem;
  font-size: 0.3rem;
  color: #333333;
  text-indent: 2em;
  font-weight: bold;
}
.big-a {
  line-height: 0.4rem;
  font-size: 0.3rem;
  color: #333333;
  text-indent: 2em;
  font-weight: bold;
}
.dandu span {
  line-height: 0.4rem;
  color: rgb(63, 62, 62);
  font-weight: bold;
  line-height: 0.4rem;
  font-size: 0.3rem;
}
.small {
  margin-top: 0.12rem;
  line-height: 0.4rem;
  font-size: 0.3rem;
  color: rgb(66, 66, 66);
  text-indent: 2em;
}
.middle {
  line-height: 0.4rem;
  margin-top: 0.4rem;
  text-align: center;
  font-size: 0.3rem;
  font-weight: bold;
}