input[type='number'] {
    -moz-appearance: textfield;
}
input[type=number]::-webkit-inner-spin-button, 
input[type=number]::-webkit-outer-spin-button { 
    -webkit-appearance: none; 
    margin: 0; 
}
div.input-group.number-spinner span.input-group-addon {
	background-color: #eee;
	font-weight: bold;
	font-size: 16px;
}