JSFiddle - React, Tailwind, and code Playground

HTML

<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js"></script>
<link rel="stylesheet" href="http://ajax.googleapis.com/ajax/libs/jqueryui/1.11.0/themes/smoothness/jquery-ui.css">
<script src="http://ajax.googleapis.com/ajax/libs/jqueryui/1.11.0/jquery-ui.min.js"></script>
<table>
<tr><th>head 1</th><th>head 2</th></tr><tr><td>a1</td><td>b1</td></tr></table><script>
$( "th" ).resizable();
</script>

CSS

th {
   border: 1px solid black;
   
}
table{
border-collapse: collapse;
}
.ui-icon, .ui-widget-content .ui-icon {
background-image: none;
}