So, I'm confused pretty severely... So I went to w3Schools iFrame page. Copy and pasted this code into codepen directly from w3schools...
<iframe src="https://www.w3schools.com"></iframe>
I also tried changing the URL a few times. Loading Google even didn't work... All that happens is a blank page with the same background color as the parent page. I dont understand why the iframe code even from w3schools doesn't work... Am i not loading a dependency? I'm using the latest version of chrome.
index.html
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Soundcloud Downloader</title>
</head>
<body>
<div class="container">
<iframe src="http://1stdibs.com/"></iframe>
<iframe src="http://soundtake.net/"></iframe>
<iframe src="https://www.w3schools.com"></iframe>
</div>
</body>
</html>
A working code pen:
https://codepen.io/anon/pen/GEePEK
My view (screenshot): http://imgur.com/a/6bPWB