How to remove the up and down arrows in the input box in input type=number

html code

默认：<input type="number" /><br><br>
处理：<input type="number" class="deal" />

css code

.deal::-webkit-textfield-decoration-container {
   background-color: #f0f3f9;
}    //添加背景色 下边两行是去掉input 输入框右边的上下箭头按钮.deal::-webkit-inner-spin-button {
   -webkit-appearance: none;
}
.deal::-webkit-outer-spin-button {
   -webkit-appearance: none;
}

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