css-reset | Customization of Eric Meyer 's CSS Reset

I'm getting this error after I've updated the packages in my package JSON file.

How do I ensure my Javascript always loads after an embedded Wistia video loads?

I have a page that has a Wistia video embedded on it, and some Javascript that is trying to do the following:

1. Detect the play button of the video (and full screen button)
2. Listen for when the play button is clicked (or clicked again, aka paused)
3. Start a timer when the play button is clicked
4. Pause the timer when the video is paused
5. After enough time passes, reveal some hidden content

I had this working during testing, but later I realized it was failing on most occasions because my Javascript was running before the Wistia video was loaded, therefore, it wasn't finding the video elements I need to add eventlisteners to.

I tried to look up solutions to defer javascript or wait for the whole page to load, but it isn't working. Any help you could provide to get this timer working 100% of the time would be appreciated!!

Please view my code below, or look at the JSFiddle right here: https://jsfiddle.net/skuq16t3/

HTML

How can I let my To-do dynamic, with the possibility to add items trought a form?

This is is my list:

I am trying to align the header, body, footer, and div's vertically in one column such that the web design is responsive (looks good on different screen sizes): ConfluenceInfinite.org or see dev subdomain below.

For people who are new to html and css (like me) this is a pure css/html implementation/markup including the menu.

You can go to my development subdomain to see the issue first-hand: my development subdomain: dev.confluenceinfinite.org

I have done LOT of research on this. Here is some of that research:

I don't believe this question/answer applies to my issue because my issue is vertical alignment (correct me if I am wrong). It uses fixed px values, which won't work for cell phones, and I tried the display: inline-block, but it didn't work. Here is the link to the SO question: click here

This question/answer (which got via searching OS tag vertical-alignment) also has a fixed width that I do not want to do because I want the

I don't think this helps either because it aligns elements within a container, but I want the containers/div's aligned. Am I missing something?: click here

This solution has the correct title/heading, but aligns things on the "right" vertically, which don't seem applicable to my issue: Click here

I used to use a website or program that allowed a developer to test/visualize website design on multiple screen sizes. I can no longer find that site. If you know the location of that site, please comment or put it in your answer. Thanks!

Here is my index/home page html markup:

I am trying to point at this button but it does not seem to have a label or title.

The button is a sub-button of another, and will only come up when the first button is clicked.

I am trying to select and click on an element in Selenium, but it doesn't have the typical tags, and the xpath changes on reload. The symbol stays consistent though, and I want to be able to select the button using the symbol.

The HTML looks like this: