.main-content .nav{
    margin-top: 10px;
    height: 30px;
    font-size: 16px;
    line-height: 16px;
  }
  .main-content .content{
    border: 1px solid #eee;
    
   margin-bottom: 10px;
  }
  .content .title {
    margin: 1rem 0;
    display: block;
    text-align: center;
  }
 .content ul{
    display: flex;
    justify-content: space-between;
    padding: 2rem 40rem;
 }
 .content ul li:first-child{
   display: flex;
   align-items: center;
   font-size: 2rem;
 }