CSS rule for targeting an element that does not have any child elements

I have a variety of different elements that are structured similarly to the following..

<div id="hi">
    <div class="head">
    </div>
    <div class="footer">
    </div>
</div>

..however, some of these elements do not contain the footer element, only a head. I would like to add a bottom border to those elements that lack a footer. Is there a CSS selector that could help achieve this effect, or would I need to utilize a JavaScript solution?

Answer №1

To target elements that do not contain any other elements, you can utilize the :empty selector. However, the functionality you are seeking will only be possible once CSS Selectors Level 4 introduces the :has and :not(<i>selector list</i>) features in browsers. As of now, achieving this with pure CSS is not feasible. Depending on your specific requirements, you may consider implementing a JavaScript solution for minor enhancements or reconsidering your approach if the feature is crucial for your project.

Answer №2

If you're looking to customize your layout based on your specific background, a strategy could involve setting a fixed border for #hi and then positioning your footer so that it slightly overlaps using either margin-bottom: -1px or

position: relative; bottom: -1px;
. This allows for the border to be hidden when the footer is visible.

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