Bootstrap 5.2下移除数字输入框箭头时，如何在CSS中正确覆盖-moz-appearance属性？

Let’s get that Firefox number input arrow issue sorted out! The root problem here is Bootstrap 5.2’s default styles applying appearance: none; to number inputs, which is overriding your -moz-appearance: textfield; rule—exactly what you spotted in dev tools.

Here are two reliable ways to fix this:

Option 1: Use Higher Specificity Selectors (Recommended) #

Bootstrap typically applies styles to inputs via the .form-control class. We can create a more specific selector to override its default appearance rule without relying on !important:

/* Chrome, Safari, Edge, Opera */
input::-webkit-outer-spin-button,
input::-webkit-inner-spin-button {
  -webkit-appearance: none;
  margin: 0;
}

/* Firefox - override Bootstrap's default appearance rule */
input[type=number].form-control {
  -moz-appearance: textfield;
  appearance: textfield; /* Reset global appearance to textfield for Firefox */
}

This works because the selector input[type=number].form-control has higher specificity than Bootstrap’s .form-control rule, so your styles will take precedence.

Option 2: Use !important (Quick Fix) #

If you don’t want to tie the rule to the .form-control class, you can use !important to force your styles to override Bootstrap’s:

/* Chrome, Safari, Edge, Opera */
input::-webkit-outer-spin-button,
input::-webkit-inner-spin-button {
  -webkit-appearance: none;
  margin: 0;
}

/* Firefox - force override with !important */
input[type=number] {
  -moz-appearance: textfield !important;
  appearance: textfield !important;
}

Just note that overusing !important can make CSS harder to maintain long-term, so the first option is preferred when possible.

After updating your CSS, refresh Firefox and you’ll see those number input arrows are gone, matching the behavior in Chrome!

内容的提问来源于stack exchange，提问作者randoo