JSFiddle - React, Tailwind, and code Playground

HTML

<div class="content">
    <div>
    <h3>abc</h3>
    <div class="classa">some content</div>
    </div>
    <div>
    <h3>xyz</h3>
    <div class="classa">more content</div>
    </div>
    <div>
    <h3>header3</h3>
    <div class="classa">another content</div>
    </div>
</div>

CSS

.content > div:not(:first-child) {
    display: none;
}