.w {
  width: 1120px;
  margin: 0 auto;
}
body {
  background-color: #f0f0f0;
}
.content {
  display: flex;
  flex-direction: column;
  background-color: #fff;
  margin: 30px auto;
  padding: 30px;
}
.content h2 {
  font-size: 40px;
  font-family: Source Han Sans SC-Bold, Source Han Sans SC;
  font-weight: bold;
  color: #000000;
}
.content span {
  margin: 30px 0 80px;
  font-size: 20px;
  font-family: Source Han Sans SC-Regular, Source Han Sans SC;
  font-weight: 400;
}
.content p {
  text-indent: 2em;
  /*首行缩进2个字符*/
  line-height: 30px;
  font-size: 18px;
  font-family: Source Han Sans SC-Regular, Source Han Sans SC;
  font-weight: 400;
}
.content .img {
  margin: 20px auto;
}