title: Pure CSS multi-level drop-down menu
body: <p>I haven't done a lot of work with multi-level, pure CSS drop-down menus before, but I'm now looking for the cleanest possible method that is out there. When I've searched for this online I've found a lot of solutions that were 4-5 years old and I'm not sure whether there are better ways to achieve this than to do something <a href="http://www.cssplay.co.uk/menus/dd_valid.html" rel="noreferrer">like this</a>.</p>