.input-prepend.input-append input {
  font-size: 24px;
  padding-top: 11px;
  padding-bottom: 11px;
  width: 100px;
  text-align: right;
}

.product_image {
  width: 50%;
  float: left;
}
.product_info {
  width: 50%;
  float: left;
}
.product_photo {
  width: 50%;
}
@media (max-width: 480px) {
  .product_image {
    width: 100%;
  }
  .product_info {
    width: 100%;
  }
  .product_photo {
  width: 100%;
  }
}