CSS Selection of Excerpt in Casper

Can anyone help with a CSS selector? I need to select the class post-card-excerpt (in Ghost’s default theme Casper). I often have difficulty with elements wrapped in links. The class is at the bottom of this snippet.

<article class="post-card post no-image post-card-large">

    <div class="post-card-content">

        <a class="post-card-content-link" href="/heres-a-test-from-ia-writer/">
            <header class="post-card-header">
                <div class="post-card-tags">
                <h2 class="post-card-title">
                    Select Me
                <div class="post-card-excerpt">How do you select this element?</div>