JSFiddle - React, Tailwind, and code Playground

HTML

<p class="item">Item 1</p>
<p class="item">Item 2</p>
<p class="item group">Item 3</p>
<p class="item group">Item 4</p>
<p class="item">Item 5</p>

CSS

.wrap {
    border: 1px dotted #ff0000;
}

JavaScript

$(".group").wrapAll("<div class='wrap' />");