reset default appearance

input[type=number], textarea {
  -moz-appearance: textfield;
}

input[type=number]::-webkit-inner-spin-button, /* webkit 桌面的数字默认的增加与减少按键 */
input[type=number]::-webkit-outer-spin-button,
input[type=submit],
input[type=search],
input[type=reset] {
  -webkit-appearance: none;
}