移除HTML5 input在type="number"时的上下小箭头

/*移除HTML5 input在type="number"时的上下小箭头*/
input::-webkit-outer-spin-button,
input::-webkit-inner-spin-button{
    -webkit-appearance: none;
    margin: 0;
}
input[type="number"]{-moz-appearance:textfield;}