.banner img
                        
                          width: 100%;
border: 1px solid #ffaa00;
                     }
.content_pro .product {
                           	
                                height: 400px;
                           
                       }
.case{
   width: 90%;
}          
.theory .theory_left img{
  width:95%
}
.content_pro .right .click .c_right{
  height: 64px;
}
.youshi{
  margin-top:60px;
}

.head .logo img {
     vertical-align: middle;
}

.head .icon{

}