.md-about-3-31.md21869 {
  padding-top: 0.84rem;
  padding-bottom: 1.1rem;
  position: relative;
}
.md-about-3-31.md21869 .layout {
  margin-left: auto;
  margin-right: auto;
  width: 14.4rem;
  max-width: 92%;
}
.md-about-3-31.md21869 .md-md {
  position: absolute;
  top: -1.3rem;
  visibility: hidden;
}
.md-about-3-31.md21869 .h2 {
  line-height: 1.25;
}
.md-about-3-31.md21869 .desc {
  color: var(--active);
  margin-top: 0.03rem;
}
.md-about-3-31.md21869 .tip {
  padding: 0 10%;
  margin-top: 0.26rem;
  line-height: 1.8;
}
.md-about-3-31.md21869 .content {
  margin-top: 0.54rem;
  line-height: calc(30 / 16);
}
.md-about-3-31.md21869 .tags {
  background-color: #f5f5f5;
  padding: 0.2rem;
  margin-top: 0.72rem;
}
.md-about-3-31.md21869 .tags a {
  color: var(--active);
}