JSFiddle - React, Tailwind, and code Playground

HTML

<script src="https://igniteui.com/js/modernizr.min.js"></script>
<script src="https://code.jquery.com/jquery-1.9.1.min.js"></script>
<script src="https://code.jquery.com/ui/1.10.3/jquery-ui.min.js"></script>
<script src="https://cdn-na.infragistics.com/igniteui/latest/js/infragistics.core.js"></script>
<script src="https://cdn-na.infragistics.com/igniteui/latest/js/infragistics.lob.js"></script>
<script src="https://igniteui.com/js-data/continents-with-countries-and-cities"></script>
<link href="https://cdn-na.infragistics.com/igniteui/latest/css/themes/infragistics/infragistics.theme.css" rel="stylesheet"></link>
<link href="https://cdn-na.infragistics.com/igniteui/latest/css/structure/infragistics.css" rel="stylesheet"></link>

<div id="splitter">
        <div style="overflow: auto">
            <ul id="tree"></ul>
        </div>
        <div><p>Select a destination from tree.</p></div>
    </div>

CSS

#tree {
            overflow: hidden;
        }
        @media all and (max-width: 480px) {
            #splitter {
                font-size: 16px;
            }
        }
     
        p { padding: 10px; }

JavaScript

$(function () {
            $("#splitter").igSplitter({ height: "300px", panels: [{ size: 160, min: 100, max: 250 }] });
            $("#tree").igTree({
                dataSource: continentsWithCountries,
                dataSourceType: "json",
                bindings: {
                    textKey: "Text",
                    valueKey: "Text",
                    childDataProperty: "Countries"
                }
            });
            $("#tree").on("igtreeselectionchanged", function (sender, eventArgs) {
                var node = eventArgs.selectedNodes[0];
                if (node.data.Description) {
                    $("#splitter").igSplitter("secondPanel").html($("<p></p>").text(node.data.Description));
                } else {
                    $("#splitter").igSplitter("secondPanel").html($("<p></p>").text("No information found."));
                }
            });
        });