css remove number input arrows

CSS
/* Chrome, Safari, Edge, Opera */
input::-webkit-outer-spin-button,
input::-webkit-inner-spin-button {
  -webkit-appearance: none;
  margin: 0;
}

/* Firefox */
input[type=number] {
  -moz-appearance: textfield;
}  /* Chrome, Safari, Edge, Opera */
input::-webkit-outer-spin-button,

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

  }

/* Firefox */
input[type=number] {
  -moz-appearance: textfield;

  }
 
Source

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