.sort{
  padding: 20px 130px 40px 130px;
  background-color: #fff;
  margin-bottom: 20px;}
  .sort .sort_li{
  float: left;
  background-color: #EEEEEE;
  font-size: 16px;
  margin-right: 40px;
  border-radius: 4px;
  }
.sort .sort_li .sort_a{padding: 0 68px;line-height: 60px;display: block;}
  .sort .sort_li:nth-child(4n){
  margin-right: 0;
  }
  .sort .sort_li:hover{
  cursor: pointer;
  background-color: #F5AB5D;
  color: #fff;
  }

  .cases_content .cases_li{
  float: left;
  width: 25%;
  padding: 2px;
  margin-bottom: 20px;
  text-align: center;
  }
 .cases_content .cases_li .cases_img img{
   width: 100%;
   height: 170px;
    background-position: 50% 50%;}
  .cases_content .cases_li:hover .cases_img{
    -webkit-transform: scale(1.01);
        -ms-transform: scale(1.01);
            transform: scale(1.01);
  }
  .cases_content .cases_li:hover{
    color: #F5AB5D;
    cursor: pointer;
  } 
  .cases_content .cases_li .case_name {
    margin-top: 10px;
    font-size: 13px;
  }
.cases_content{display: flow-root;}
@media (max-width: 760px){
 
  .banner img{
  width: 100%;
  }
  .sort{
  padding: 10px ;
  margin-bottom: 0;}
  .sort .sort_li{
  float: left;
  color: #F5AB5D;
  text-align: center;
  width: 23%;
  padding: 0 5px;
  background-color: #EEEEEE;
  line-height: 30px;
  font-size: 15px;
  margin: 0 1%;
  border-radius: 4px;
  }
  .sort .sort_li .sort_a{padding: 0 5px;line-height: 30px;display: block;}
  .sort .sort_li:last-child{
  margin-right: 0;
  }
  .cases_content .cases_li .cases_img img{
    height: auto;
  }

  .cases_content .cases_li{
  float: left;
  width: 49%;
  margin-right: 2%;
  text-align: center;
  overflow: hidden;
  }
    .cases_content .cases_li:nth-child(3n){
    margin-right: 2%;
  } 
  .cases_content .cases_li:nth-child(2n){
  margin-right: 0;
  }
}