JSFiddle - React, Tailwind, and code Playground

HTML

<div id="superfish">
    <div class="region region-superfish">
        <div id="block-superfish-1" class="block block-superfish contextual-links-region">
        <h2>Main menu</h2>
        <div class="contextual-links-wrapper contextual-links-processed">
            <div class="content">
                <ul id="superfish-1" class="menu sf-menu sf-main-menu sf-horizontal sf-style-simple sf-total-items-2 sf-parent-items-1 sf-single-items-1 superfish-processed sf-js-enabled sf-shadow">
                <li id="menu-221-1" class="active-trail first odd sf-item-1 sf-depth-1 sf-no-children">
                <li id="menu-312-1" class="active-trail last even sf-item-2 sf-depth-1 sf-total-children-1 sf-parent-children-0 sf-single-children-1 menuparent">
                </ul>
            </div>
        </div>
</div>

JavaScript

$('#superfish h2').html('');