JSFiddle - React, Tailwind, and code Playground

HTML

<div id="mp_blurb_1">
    <h4 class="et_pb_module_header">Example 1</h4>
    <div class="et_pb_blurb_content">Lorem ipsum dolor sit amet, consectetur adipisicing elit. Eveniet labore error earum voluptate. Explicabo reiciendis nisi, nihil deleniti minima accusantium ducimus, vel. Aspernatur nam culpa illo. Porro illo ipsum magnam?</div>
</div>
<div id="mp_blurb_2">
    <h4 class="et_pb_module_header">Example 2</h4>
    <div class="et_pb_blurb_content">Lorem ipsum dolor sit amet, consectetur adipisicing elit. Eveniet labore error earum voluptate. Explicabo reiciendis nisi, nihil deleniti minima accusantium ducimus, vel. Aspernatur nam culpa illo. Porro illo ipsum magnam?</div>
</div>
<div id="mp_blurb_3">
    <h4 class="et_pb_module_header">Example 3</h4>
    <div class="et_pb_blurb_content">Lorem ipsum dolor sit amet, consectetur adipisicing elit. Eveniet labore error earum voluptate. Explicabo reiciendis nisi, nihil deleniti minima accusantium ducimus, vel. Aspernatur nam culpa illo. Porro illo ipsum magnam?</div>
</div>
<div id="mp_blurb_4">
    <h4 class="et_pb_module_header">Example 4</h4>
    <div class="et_pb_blurb_content">Lorem ipsum dolor sit amet, consectetur adipisicing elit. Eveniet labore error earum voluptate. Explicabo reiciendis nisi, nihil deleniti minima accusantium ducimus, vel. Aspernatur nam culpa illo. Porro illo ipsum magnam?</div>
</div>
<div id="mp_blurb_5">
    <h4 class="et_pb_module_header">Example 5</h4>
    <div class="et_pb_blurb_content">Lorem ipsum dolor sit amet, consectetur adipisicing elit. Eveniet labore error earum voluptate. Explicabo reiciendis nisi, nihil deleniti minima accusantium ducimus, vel. Aspernatur nam culpa illo. Porro illo ipsum magnam?</div>
</div>
<div id="mp_blurb_6">
    <h4 class="et_pb_module_header">Example 6</h4>
    <div class="et_pb_blurb_content">Lorem ipsum dolor sit amet, consectetur adipisicing elit. Eveniet labore error earum voluptate. Explicabo reiciendis nisi, nihil deleniti minima accusantium...

JavaScript

$('[id^="mp_blurb_"]').each(function() {
    var $this = $(this);
    var $content = $this.find('.et_pb_blurb_content');
    $this.find('h4.et_pb_module_header').detach().prependTo( $content );
});