html,body{
  margin: 0;
  width: 100%;
  height: 100%;
  background-color: #F7F7F7;
}
p{
  margin: 0;
}

img{
  width: auto;
  height: auto;
}
#app{
  height: 100%;
}
.main{
  min-height: 1000px;
}
.content{
  max-width: 1218px;
  margin: auto;
  padding: 20px;
}
.content .main-content{
  min-height: 1000px;
  width: 100%;
  background-color: #ffff;
  box-shadow: 0 0 10px 0 rgba(0, 0, 0, .15);
}
.content .main-content .main-content-title{
  font-size: 24px;
  padding: 16px;
  color: #333;
}
.content .main-content .main-content-intro{
  font-size: 14px;
  padding: 0 16px 0 16px;
  color: #606060;
  line-height: 26px;
}
.content .main-content img{
  width: 100%;
}
.content .main-content .main-content-content{
  font-size: 14px;
  padding: 30px 20px 0 20px;
  line-height: 26px;
  color: #333;
}
.content .main-recommend{
  width: 100%;
}
.content .main-recommend .main-recommend-title{
  color: crimson;
  padding: 20px 0 20px 0;
}
.content .main-recommend .main-recommend-content{
  box-shadow: 0 0 10px 0 rgba(0, 0, 0, .15);
  background-color: #ffff;
  padding: 20px;
  display: grid;
  grid-template-columns: repeat(4,1fr);
  row-gap: 20px;
  column-gap: 60px;
  justify-content: center;
}
.content .main-recommend .main-recommend-content .item p{
  padding-bottom: 20px;
  font-size: 14px;
  line-height: 24px;
}
.content .main-recommend .main-recommend-content img{
  width: 100%;
  height: auto;
}






@media screen and (max-width:1218px) {
  .content .main-recommend .main-recommend-content{
    grid-template-columns: repeat(3,1fr);
    padding: 5px;
  }
}

@media screen and (max-width:900px) {
  .content .main-recommend .main-recommend-content{
    grid-template-columns: repeat(2,1fr);
  }
}






@media screen and (max-width:1218px){
  .content{
    padding: 20px 100px 20px 100px;
  }
  .content .main-content{
    width: 100%;
  }
  .content .main-recommend{
    width: 100%;
  }
}
@media screen and (max-width:767px){
  img{
    width: auto;
    height: auto;
  }
  #app{
    max-width: 100%;
    margin: auto;
  }
  .content{
    padding: 8px;
  }
  .content .main-content{
    width: 100%;
  }
  .content .main-recommend{
    width: 100%;
  }
  .content .main-recommend .main-recommend-content .item{
    width: 90%;
  }
  .content .main-recommend .main-recommend-content{
    text-align: center;
    grid-template-columns: repeat(1,1fr);
    justify-items: center;
  }
  .content .main-recommend .main-recommend-content img{
    width: 90%;
    height: auto;
  }
}
@media screen and (max-width:480px){
  .content .main-recommend .main-recommend-content .item{
    width: 100%;
  }
}

@media screen and (min-width:1218px) {
  .a:hover{
    text-decoration: underline;
  }
  .a-item:hover{
    text-decoration: underline;
  }
  #a-button:hover{
    color: #CC0013;
  }
}