JSFiddle - React, Tailwind, and code Playground

HTML

<script>
function showPanel(a,b)
    {
    document.getElementById(a).style.display="inline-block";
    document.getElementById(b).style.display="none";
    }
</script>
<iframe src="http://www.creeperhost.net" id="panel1"></iframe>
<iframe src="http://cp.creeperhost.net" id="panel2"></iframe>
<br/>
<input type="button" id="buton2" name="CreeperHost" value="CreeperHost" onclick="showPanel('panel1','panel2')">
<input type="button" id="button1" name="CreeperPanel" value="CreeperPanel" onclick="showPanel('panel2','panel1')">

CSS

#panel2{
    display:none;
}