.container{
  width: 100%;
  max-width: 900px;
  background-color: #f7f7f2;
  margin: 0 auto;
}
.top{
  padding: 30px;
  display: flex;
  justify-content: space-between;
}
.top .content{
  font-size: 20px;
  font-family: 仿宋;
  font-weight: bold;
}
.nav{
  width: 50%;
  display: flex;
  flex-direction: row-reverse;
  justify-content: space-around;

}
.nav p{
  cursor: pointer;
  font-size: 23px;
  font-family: 仿宋;
  writing-mode: vertical-lr;
  letter-spacing: 1rem;
}
.content-box{
    max-width: 790px;
  margin: 0 auto 45px;
}
.content-box img{
  width: 100%;

}
.footer{

  background-image: url(../images/footer-bg.png);
}
.footer .item{
  display: flex;
  padding: 100px 50px 30px;
  justify-content: space-between;
}
.footer .item .item-desc{
  text-align: center;
  font-size: 20px;
  font-family: 仿宋;
  font-weight: bold;
}
.footer .item .item-desc .text{
  margin-top: 70px;
}
.footer .item .item-desc .btn{
  margin: 60px auto 0;
  border: 3px solid #020202;
  max-width: 180px;
  padding: 10px 0px;
  cursor: pointer;
}
.footer .tip{
  margin-top: 270px;
  font-size: 30px;
  font-family: 仿宋;
  font-weight: bold;
  text-align: center;
  padding-bottom: 70px;
    text-shadow: 
    -2px -2px 0 #fff,  
     2px -2px 0 #fff,
    -2px -2px 0 #fff,
     2px  2px 0 #fff;

}