main .article {
  margin: 20px 0;
  border-radius: 8px;
  opacity: 1;
  padding: 20px;
  background: #ffffff;
}
main .article .bread {
  display: flex;
  align-items: center;
  margin-bottom: 20px;
}
main .article .bread li {
  display: flex;
  align-items: center;
  position: relative;
}
main .article .bread li a {
  font-family: 思源黑体;
  font-size: 12px;
  font-weight: normal;
  letter-spacing: 0em;
  color: #999;
}
main .article .bread li .jt_right {
  display: block;
  margin-left: 5px;
}
main .article .bread li .jt_right:before {
  content: '';
  float: left;
  position: relative;
  width: 0;
  height: 0;
  border-top: 6px solid transparent;
  border-bottom: 6px solid transparent;
  border-left: 6px solid white;
  z-index: 1;
}
main .article .bread li .jt_right:after {
  content: '';
  float: left;
  position: relative;
  left: -5px;
  top: 0px;
  width: 0;
  height: 0;
  border-top: 6px solid transparent;
  border-bottom: 6px solid transparent;
  border-left: 6px solid #999;
}
main .article .bread li:nth-last-child(1) .jt_right {
  display: none;
}
main .head {
  display: flex;
  align-items: end;
  font-size: 20px;
  font-weight: 700;
  letter-spacing: 0em;
  color: #3d3d3d;
}
main .head ul {
  font-size: 12px;
  font-weight: 300;
  display: flex;
  margin-left: 10px;
}
main .head ul li {
  border: 1px solid #eee;
  padding: 0 0.3rem;
  margin-right: 10px;
}
main .divider {
  width: calc(100% - 40px);
  height: 1px;
  background: #e8ebf1;
  margin: 20px 0;
}
main .box {
  width: calc(100% - 70px);
  opacity: 1;
  background: #f7f8f8;
  position: relative;
  padding: 45px 51px 21px 20px;
  font-size: 16px;
  font-weight: 400;
  line-height: 32px;
  letter-spacing: 0em;
  color: #3d3d3d;
}
main .dot {
  position: absolute;
  left: 20px;
  top: 20px;
}
main .rich-content img {
  max-width: 100%;
  object-fit: contain;
}
main .page-turning {
  display: flex;
  justify-content: space-between;
  margin-top: 40px;
}
main .page-turning .pre {
  width: 40px;
  height: 40px;
  background-image: url(../images/about/pre.png);
  background-repeat: no-repeat;
  background-size: contain;
  cursor: pointer;
}
main .page-turning .next {
  width: 40px;
  height: 40px;
  background-image: url(../images/about/next.png);
  background-repeat: no-repeat;
  background-size: contain;
  cursor: pointer;
}
@media screen and (max-width: 768px) {
  main .article {
    margin-top: 2.5rem;
  }
  main .article .bread {
    display: none;
  }
  main .head {
    display: flex;
    align-items: start;
    font-size: 2.625rem;
    font-weight: normal;
    line-height: 3.071rem;
    letter-spacing: 0px;
    flex-direction: column;
    color: #1d2129;
  }
  main .head ul {
    font-size: 0.2rem;
    font-weight: 300;
    display: flex;
    margin-left: 0;
    margin-top: 0.3rem;
  }
  main .head ul li {
    border: 0.05rem solid #eee;
    padding: 0 1.3rem;
    margin-right: 0.8rem;
    font-size: 1.3rem;
  }
  main .page-turning {
    margin-top: 2.5rem;
  }
  main .page-turning .pre,
  main .page-turning .next {
    width: 3.5rem;
    height: 3.5rem;
  }
  main .divider,
  main .dot {
    display: none;
  }
  main .box {
    margin: 1.875rem auto 3.125rem;
    padding: 0;
    width: 100%;
    height: auto;
    font-family: '苹方-简-常规';
    font-size: 1.75rem;
    font-weight: normal;
    line-height: 3.0475rem;
    letter-spacing: 0px;
    color: #86909c;
  }
}