JSFiddle - React, Tailwind, and code Playground

HTML

<input type="number" class="no-spinners"/>

CSS

/* hide up/down arrows ("spinners") on input fields marked type=number */
.no-spinners [type='number'] {
  -moz-appearance:textfield;
}

.no-spinners::-webkit-outer-spin-button,
.no-spinners::-webkit-inner-spin-button {
  -webkit-appearance: none;
  margin: 0;
}