Building a tribute page and trying to embed video

Hi everyone, I’m working on the Tribute Page project and I have a few questions. I’m trying to embed a couple youtube videos and am having a lot of trouble. Can someone tell me what is wrong with my code?:

<iframe width="240" height="240" source src="" type="video/mp4"

I’m using the required video html tags when trying to embed.

Also, how do I double space everything in html? Particularly between list items.

I’ve just began to learn how to code and any help would be great.

Well you can always try the code YT provides for embedding:

<iframe width="560" height="315" src="" frameborder="0" allowfullscreen></iframe>

Unless you are and it’s still not working.

As for “double spacing” you can try messing around with padding or margins between your li’s. Something like li { margin: 10px 0; } would put 10 pixels of spacing on the top and bottom of each list item but adds no spacing to the left and right. You can use percentages too: li { margin: 2% 0; }