Allow targetting of a class rather than an ID in CSS examples

[rachelandrew]

I have an issue where to make a CSS example for the CSS property scroll-snap-align behave consistently I need to be able to apply the selected value to all child nodes.

Currently I believe I can only target one element, by giving it the ID example-element. I actually need to target that element and all of the siblings. Would it be possible to make it so that a class can be targeted instead as this would mean I could apply the property to all children. Otherwise I think the solution will be to use some JavaScript to do so.

In the example below, I want to be able to apply scroll-snap-align to all of the children and not just the one with the ID.

<section id="example-choice-list" class="example-choice-list large" data-property="scroll-snap-align">
    <div class="example-choice" initial-choice="true">
        <pre><code class="language-css">scroll-snap-align: none;</code></pre>
        <button type="button" class="copy hidden" aria-hidden="true">
            <span class="visually-hidden">Copy to Clipboard</span>
        </button>
    </div>
    <div class="example-choice">
        <pre><code class="language-css">scroll-snap-align: start;</code></pre>
        <button type="button" class="copy hidden" aria-hidden="true">
            <span class="visually-hidden">Copy to Clipboard</span>
        </button>
    </div>

    <div class="example-choice">
        <pre><code class="language-css">scroll-snap-align: end;</code></pre>
        <button type="button" class="copy hidden" aria-hidden="true">
            <span class="visually-hidden">Copy to Clipboard</span>
        </button>
    </div>

    <div class="example-choice">
        <pre><code class="language-css">scroll-snap-align: center;</code></pre>
        <button type="button" class="copy hidden" aria-hidden="true">
            <span class="visually-hidden">Copy to Clipboard</span>
        </button>
    </div>
</section>

<div id="output" class="output large hidden">
    <section id="default-example" class="default-example">
        <div class="scroller">
            <div>1</div>
            <div id="example-element">2</div>
            <div>3</div>
        </div>
    </section>
</div>

[welcome]

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[wbamberg]

I can't think of any reason not to do this, unless it's terribly complicated to implement.