How can I retrieve the label of a checked input using CSS?

Is there a way to modify the background color of the label associated with a checked radio button using Django's form rendering structure? Here is an example of how Django renders form radio inputs:

<label for="id_form-level_0">
  <input type="radio" name="form-level" value="1" required="" id="id_form-level_0">
  description 
</label>

I am not looking to change this structure, so the commonly used solution of

input[type="radio"]:checked + label {
  background-color: red;
}

does not work in this scenario. Furthermore, it appears that the :has() selector is not universally supported by browsers, rendering the following code ineffective as well:

label:has(input[type="radio"]:checked) {
  background-color: red;
}

What alternate approach should be taken to target the correct label using CSS?

Answer №1

Unfortunately, the :has pseudoclass does not function properly in FireFox (https://caniuse.com/css-has). This means it is not possible to select a parent element in CSS. It can be frustrating when you want to target the label element as the parent of an input.

Answer №2

When the input is checked, change the background to red,

input[type="checkbox"]:checked {
background:red;}

If inputs are checked, change the background of sibling labels to red. (The label should come after the input element)

input[type="checkbox"]:checked + label {
  background-color: red;
}

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