input#amount.input-small {
  font-size: 15px !important;
  width: 150px !important;
}
.input-append, .input-prepend {
  font-size: 0.7em !important;
}
#discount_amount{
  font-size: 15px !important;
  width: 150px !important;
}
#gross_amount{
  font-size: 20px !important;
  width: 150px !important;
}