# HTML and CSS Reference
here are a few little html/css snippets to copy if you want
## embedding
is easy, just paste in the embed code:
<iframe width="560" height="315" src="https://www.youtube.com/embed/_V10kWLh71U" title="YouTube video player" frameborder="0" allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture" allowfullscreen></iframe>
you can also change the width and height if you want:
<iframe width="180" height="100" src="https://www.youtube.com/embed/_V10kWLh71U" title="YouTube video player" frameborder="0" allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture" allowfullscreen></iframe>
## boxes
you can create gives