JSFiddle - React, Tailwind, and code Playground

by panchroma

HTML

<link rel="stylesheet" href="//netdna.bootstrapcdn.com/bootstrap/3.0.0/css/bootstrap.min.css">
<script src="//netdna.bootstrapcdn.com/bootstrap/3.0.0/js/bootstrap.min.js"></script>
<div class="container">

      <div class="panel panel-default">
        <div class="panel-heading">
          <h3 class="panel-title">Panel</h3>
        </div>
        <div class="panel-body">
          <iframe width="100%" src="http://superlp.com.br" frameborder="0"></iframe>
        </div>
      </div>

    </div>

CSS

iframe{
    position:absolute;
    top:30px;
    height:100%;
}