//隐藏 input 标签 number 后的加减箭头
<style>
input::-webkit-outer-spin-button,input::-webkit-inner-spin-button{
-webkit-appearance: none !important;
margin: 0;
}
input[type="number"]{-moz-appearance:textfield;}
</style>
<input type="number" maxlength="3" name="cylL" class="polish"/>