.content {
  min-height: 349px;
  display: flex;
}
.content-left {
  width: 305px;
  padding: 40px 25px 30px 0;
}
.catalog-item {
  margin-bottom: 35px;
}
.catalog-item li {
  cursor: pointer;
}
.catalog-item .title {
  cursor: pointer;
  display: flex;
  margin-bottom: 20px;
  width: 100%;
  justify-content: space-between;
}
.catalog-item .title img {
  margin-top: -8px;
}
.catalog-item .title h2{
  font-size: 24px;
  font-family: HarmonyOS Sans;
  font-weight: bold;
  line-height: 0px;
  color: #222222;
}
.catalog-item .active h2{
  color: #2F73E6;
}
.catalog-item .tab {
  width: 280px;
  height: 35px;
  background: #FFFFFF;
  border: 1px solid #fff;
  line-height: 35px;
  text-align: center;
  font-size: 16px;
  font-family: HarmonyOS Sans;
  font-weight: bold;
}
.catalog-item .selected {
  border: 1px solid #2F73E6;
  color: #2F73E6;
}
.content-center {
  max-width: 860px;
  padding: 28px 20px 20px 20px;
  /* border-right: 1px solid #7B756F; */
  border-left: 1px solid #7B756F;
}
.contnt-info {
  display: none;
}
.contnt-info img {
  width: 100%;
  margin-bottom: 20px;
}
.contnt-info ul li {
  list-style: disc;
  margin-bottom: 10px;
  margin-left: 20px;
  font-size: 16px;
  font-family: HarmonyOS Sans;
  font-weight: 400;
  line-height: 20px;
  color: #3F3F42;
}
.contnt-info h1 {
  font-size: 32px;
  margin-bottom: 20px;
  padding-bottom: 10px;
  border-bottom: 1px solid #7B756F;
}
.contnt-info h2 {
  font-size: 28px;
  margin-bottom: 20px;
}
.contnt-info h3 {
  font-size: 22px;
  margin-bottom: 20px;
}
.contnt-info h4 {
  font-size: 18px;
  margin-bottom: 20px;
}
.contnt-info p {
  font-size: 16px;
  font-family: HarmonyOS Sans;
  font-weight: 400;
  line-height: 20px;
  color: #3F3F42;
  margin-bottom: 20px;
}
.contnt-info a {
  color: #2F73E6;
}
.contnt-info .source {
  text-align: center;
  margin-top: -20px;
  margin-bottom: 20px;
}
@media screen and (max-width: 768px) {
  .content{
    width: 100%;
    padding: 0 15px;
  }

  .content-left{
    width: 40%;
  }

  .content-center{
    padding-right: 0;
    width: 60%;
    padding-left: 20px;
  }

  .catalog-item .tab{
    width: 100%;
  }
}

@media screen and (max-width: 500px) {
  .content-left{
    padding-right: 16px;
  }

  .catalog-item .title h2{
    font-size: 16px;
  }

  .catalog-item .title h2{
    line-height: 26px;
  }

  .catalog-item .title{
    align-items: center;
  }

  .catalog-item .tab{
    width: 100%;
    font-size: 14px;
    height: auto;
    line-height: 20px;
  }

  .catalog-item .title img{
    width: 20px;
    height: 20px;
    margin: 0;
  }

  .contnt-info h1{
    font-size: 18px;
  }

  .contnt-info p{
    word-break: break-word;
  }
}