.input-prepend.input-append input {
  font-size: 24px;
  padding-top: 11px;
  padding-bottom: 11px;
  width: 100px;
  text-align: right;
}
.stock_error {
  color: #DB5656;
}

.btn[disabled] {
  background-color: #ff8d8d;
  color: #333;
  *background-color: #d9d9d9;
}