Problem with responsive web design test suite

[jamesm554x]

Hey everyone!

Thanks for taking the time to read my question, it’s my first one ever so sorry if i get something wrong.

I am on challenge three of the responsive web design section. My problem is that I cannot check if I am doing the right thing as I go along, because the test suite will not run on codepen. The test suite menu appears and functions on my other two challenges i have done, but not this one, although it was earlier.

What I have tried;
-using a different browser.
-inputting the CDN link into the html source code (hamburger menu shows up briefly then disappears).
-disabled all chrome extensions.

The test suite works in other tabs, at the same time, just not on this specific project. This leads me to question whether my code could be interfering with the test suite.

A link to my codepen : https://codepen.io/jamesm553/pen/mdmKZam
Sorry my code is messy.

Thanks so much for your help!

[jsdisco]

You have some HTML errors, the missing closing bracket of your <iframe makes the suite disappear.

[seekinfox]

Hello.
I’ve seen your code.
Thanks for the warning Sorry my code is messy.
1 .You seem to have included an iframe in your code.

<iframe id="video" width="560" height="315"                 src="https://www.youtube.com/embed/jFsbVDk5e0A" alt="a guy playing harmonica really well"></iframe>

Note : always remember to close your tags <> </>.

[jamesm554x]

Thank you so much guys! have a great rest of your day!