JSFiddle - React, Tailwind, and code Playground

HTML

<!DOCTYPE html>
<html>
<body>
    <iframe id="github-iframe" src="" style="width:1000px;height:1000px;"></iframe>
    <script>
        fetch('https://api.github.com/repos/agalea91/crypto-monetary-base/contents/charts/relative_coin_supply_pct_estimates.html')
            .then(function(response) {
                return response.json();
            }).then(function(data) {
                iframe = document.getElementById('github-iframe');
                iframe.src = 'data:text/html;base64,' + encodeURIComponent(data['content']);
            });
    </script>
</body>
</html>