Tutorial Turn Off Number Input Spinners
WebKit desktop browsers add little up down arrows to number inputs called spinners. You can turn them off visually like this:
input[type=number]::-webkit-inner-spin-button,
input[type=number]::-webkit-outer-spin-button {
-webkit-appearance: none;
margin: 0;
}
Note that some other functionality still exists, like being able to increment the number via the scroll wheel on a mouse.
Top, on, Bottom, off.