@media only screen and (max-width: 768px){
.item_box {
width: 450px;
padding-bottom: 40px;
padding-right: 60px;  
}
.item_photo {
width: 450px;   
}
img.item{
width: 450px;    
}
.item_box:nth-of-type(2n){
padding-right: 0px;
}  
.item_detail p.item_name, .item_detail p.item_description, .item_detail p.item_price{
 width: 450px;
font-size: 19px;
 padding-bottom: 13px;
}  
  .item_detail p.item_name{
  padding-top: 15px;   
}  
}