I've looked at http://materializecss.com/side-nav.html and can see how to control the height and position of the side-nav. It's occupying the screen from the top, but what if I want it to show below the navbar?
You would have to make the header 100% and remove the padding-left of 300px. You would then need to add a margin-top of 122px or whatever the height of your navbar is.
The code would look something like the following:
header, main, footer {
width: 100%;
padding-left: 0;
}
ul.side-nav.fixed {
overflow: hidden;
margin-top: 122px;
}
and give you a result like: https://i.sstatic.net/T7d4W.jpg