.content{
  width: 800px;
  margin:40px auto;
  line-height: 40px;
  font-size: 30px;
}
.content-title{
  font-weight: bold;
  margin-bottom: 40px;
}
.content .text .bd{
  font-weight: bold;
}
.content ul{
  outline: inside;
  list-style: inside;
}
.for{
  color:#DC570F;
  text-align: right;
  font-size: 30px;
  padding-right:50px;
  margin-bottom: 20px;
}
#app{
  display: none;
  margin: 50px auto;
  border: 1px solid red;
  -webkit-box-pack: justify;
  -webkit-justify-content: space-between;
      -ms-flex-pack: justify;
          justify-content: space-between;
  padding:20px 40px;
  background: rgba(0,0,0,0.3);
  color:#fff
}
.app a{
  color:#fff;
}
.app .left{
  border-right: 1px solid red;
}
.app .left,.app .right{
  width:50%;
}
@media screen and (max-width: 1366px) {
  .content {
    width: 570px;
    font-size: 26px;
    /* border: 1px solid red; */
  }
}
@media screen and (max-width: 768px) {
  .content {
    /* border: 1px solid red; */
    max-width: 400px;
    font-size: 24px;
  }
}

@media screen and (max-width: 400px) {
  .header{
    display: none !important;
  }
  
  .header .title {
    font-size: 16px;
    display: none;
  }
  .head{
    display: block !important;
  }
  .nav{
    display: none !important;
  }
  .content {
    width: 60%;
    margin: 0 auto;
    font-size: 16px;
  }
  .for{
    font-size: 16px;
    margin-top: 20px;
    line-height: 35px;
  }
  .footer{
    display: none;
  }
}