Does CSS :not() Selectively Target Distant Descendant Elements?

Can the CSS :not() Selector Target Distant Descendants?

The CSS3 :not() pseudo-class is intended for excluding elements that match a specified selector. It has limited support for targeting distant descendants.

Implementation and Support

The :not() selector has partial implementation in modern browsers, but its support for targeting distant descendants is limited. It primarily operates on direct children of an element.

Behavior with Distant Descendants

In your example, the :not(p) selector does not affect the

element inside the

, even though it is a descendant of the

. This is because :not() only negates the immediate child selector. The

element matches the :not(p) criteria and its color is set to red. Subsequently, the

element inherits this color from its parent

.

Expected Behavior vs. Actual Behavior

You expected the

element to remain unaffected by the :not() selector, but it inherited the color change. This is not the intended behavior for targeting distant descendants.

Solution

To specifically style only

elements within a

, you should use a more direct selector:

div p {
    color: black;
}

Enhancements in CSS Selectors Level 4

CSS Selectors Level 4 proposes extending :not() to accept complex selectors with combinators. This would allow you to target distant descendants with greater flexibility. Once implemented, you could write selectors like:

p:not(div p) {
    color: red;
}

This selector would target all

elements that are not direct descendants of a

.

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