去掉input【type=number】默认的上下箭头
input::-webkit-inner-spin-button {
-webkit-appearance: none;
}
input::-webkit-outer-spin-button {
-webkit-appearance: none;
}
input::-webkit-inner-spin-button {
-webkit-appearance: none;
}
input::-webkit-outer-spin-button {
-webkit-appearance: none;
}