input::-webkit-outer-spin-button,
input::-webkit-inner-spin-button {
  -webkit-appearance: none;
  margin: 0;
}

input[type=number] {
  -moz-appearance: textfield;
}

.pain input[type=radio]{
  width: 3em;
  height: 3em;
}

@media only screen and (max-width: 500px) {
  .pain input[type=radio]{
    width: 1.5em;
    height: 1.5em;
  }
}