add a video in html code example

Example 1: how to embed videos in html

<iframe src="example.mp4" width="100px" height="100px"></iframe>

Example 2: how to add a youtube video in html

<!-- 1. Find a YouTube video and copy the embedded code
	 2. Set width and height -->
<iframe width="420" height="345" 
src="https://www.youtube.com/embed/tgbNymZ7vqY">
</iframe>

Example 3: how to add a video playing on a html page

<iframe width="420" height="315"
src="https://www.youtube.com/embed/tgbNymZ7vqY">
</iframe>