1 <input type="number" ...>
 2 
 3 <style>
 4     input::-webkit-outer-spin-button,
 5     input::-webkit-inner-spin-button {
 6         -webkit-appearance: none;
 7     }
 8     input[type="number"]{
 9         -moz-appearance: textfield;
10     }
11 </style>