Can CSS Selectors Use Parentheses as Operators?

Can I Use Parentheses in CSS Selectors?

In CSS, parentheses are not permitted as operators within selectors. They are strictly reserved for functional notations such as :lang(), :not(), and :nth-child().

To target a specific element with specific characteristics, you should follow the rules of selector syntax. In this case, you can select a header with the text "Blockhead" using the following selector:

.gumby > .pokey + h3

This selector targets any h3 element that is preceded by a .pokey element and has a common .gumby parent element. The > combinator indicates a direct child relationship, while the combinator selects adjacent siblings.

It's important to understand that CSS selectors are parsed linearly, without any precedence for combinators. The selector above can be interpreted as:

• Select h3 elements
• That are adjacent siblings of .pokey elements
• Which are direct children of .gumby elements

In your HTML example, both .pokey and the h3 are children of .gumby, fulfilling the criteria for the selector. Therefore, the .gumby > .pokey h3 selector will successfully apply styling to the "Blockhead" header.

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