.productImg{
  
}
.productImg .mainImg{
  width:300px;
  height:300px;
  border:#CCC 1px solid;
  margin:0 auto 30px auto;
  display:flex;
  justify-content: center;
  align-items:center;
}
.productImg .mainImg¡¡img{
  height: 100%;
}
#subImg{
  display:flex;
  justify-content:space-around;
}
#subImg div img{
  border:#ECECEC 1px solid;
  cursor:pointer;
}
#subImg div img:hover{
  opacity:0.7;
}
.explain{
  line-height:140%;
  margin-bottom:30px;
}