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Why Doesn't `:first-child` Select the First `` in a ``?

Mary-Kate Olsen
Mary-Kate OlsenOriginal
2024-12-14 05:27:14446browse

Why Doesn't `:first-child` Select the First `` in a ``?

Incorrect Interpretation of CSS Selectors

When attempting to style the first

element within a
with the class name detail_container, you may encounter unexpected results. This issue arises due to a misunderstanding of how the :first-child selector operates.

The CSS you have implemented is attempting to select the first

element that is also the first child of the detail_container
. However, if the first element within this
is a
    , the :first-child selector will not match the

    , even if it is the first

    within the
    .

    Correct CSS Selector Usage

    To select the first

    element, regardless of its position within the detail_container
    , you should use the :first-of-type selector instead. This selector will select the first

    element that is a direct child of the specified parent element.

    .detail_container h1:first-of-type {
      color: blue;
    }

    Alternatively, for greater browser compatibility, you can assign a class to the first

    and target that class in your CSS.

    .detail_container h1.first {
      color: blue;
    }

    By understanding the nuances of CSS selectors, you can ensure that your styling rules target the desired elements accurately.

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