"Enhancing selector parsing with the use of pseudo-elements for improved forgiveness

Is there a way to streamline CSS code using forgiving selectors like :is or :where with pseudo-elements in native CSS only? The documentation states that :is cannot be used with pseudo-elements, but I'm wondering if there's another solution that I haven't discovered yet.

For example, I am trying to prevent redundant code, as seen here:

[type="color"]::-webkit-color-swatch{
    border:none;
    border-radius:50%;
}
[type="color"]::-moz-color-swatch{
    border:none;
    border-radius:50%;
}

It would be ideal if something like this worked, but unfortunately it does not:

[type="color"]:is(::-webkit-color-swatch,::-moz-color-swatch){
    border:none;
    border-radius:50%;
}

Thank you and have a great day! :)

Edit: The initial code is divided into two selectors due to the different properties ::-webkit-color-swatch in Firefox and ::-moz-color-swatch in Chrome. Combining them into a single selector renders it ineffective in both browsers. Hence, I am seeking a forgiving selector parsing method like :is or :where, or an alternative approach.

Answer №1

If you want to implement CSS nesting, you can do so using the native CSS nesting feature:

[type="color"] {
  &::-webkit-color-swatch,
  &::-moz-color-swatch{
    border:none;
    border-radius:50%;
  }
}

To check which browsers support this feature, you can refer to this list of supported browsers. If these browsers suit your needs, feel free to use this method.

Edit:

Keep in mind that combining the -webkit and -moz selectors in the same rule may cause the browser to reject it. Therefore, there is no way to merge these selectors together.

Alternatively, you can utilize SCSS and create a mixin that will generate this structure for you. By doing so, you only need to write the code once and let SCSS handle the rest based on your initial query automatically.

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