.main-content {
  width: 100%;
  margin: 0 auto;
  font-family: PingFangSC-Regular;
  font-size: 24px;
  color: #333333;
  letter-spacing: 0;
  font-weight: 400;
}
.main-content pre {
  padding: 0.2rem 0.3rem;
  white-space: pre-wrap;
  word-wrap: break-word;
  font-family: PingFangSC-Regular;
  /* color: rgba(0, 0, 0, 0.6); */
  letter-spacing: 0;
  text-align: left;
  line-height: 50px;
}