JSFiddle - React, Tailwind, and code Playground

HTML

<iframe src="http://www.ted.com/" height="96%" width="96%" id="frameID"></iframe>

CSS

html,body 
    {
        height:100%;
        padding:0px;
        margin:0px;
        text-align:center;
        background:rgba(0,0,0,0.4);
    }
    iframe 
    {
        border:none;
        padding:0px;
        margin:0 auto;
        position:absolute;
        left:2%;
        top:2%;
        border-radius:10px;
        box-shadow:0px 5px 10px black;
    }

JavaScript

$(document).ready(function () {
    
    $('#frameID').load(function () {
        alert($('#frameID').contents().find("body").html());
    });
    
});