JSFiddle - React, Tailwind, and code Playground

HTML

<div id="resizable1">I'm a resizable.</div>
<div id="customResizableHandle" class="ui-resizable-handle ui-resizable-s"></div>

CSS

#resizable1 {
    position: absolute;
    left: 100px;
    top: 100px;
    width: 100px;
    height: 100px;
    background: green;
}

#customResizableHandle {
    width: 50px;
    height: 20px;
    background: blue;
}

JavaScript

$("#resizable1").resizable({
    handles: {
        "s": $("#customResizableHandle")
    }
});