Lesson Code: http://www.developphp.com/video/CSS/Drop-Down-Category-Menus-details-and-summary-Elements
Learn to assemble an HTML5 details driven drop down menu system. The html5 details and summary tags do not yet work in all browsers. Out of the 4 most popular browsers, it only works in Google chrome so far. So that is where we will experiment with it for now. And we can surely use it for web site development when these two elements become standardized and work in all browsers. That should happen very soon.
Used in conjunction with the HTML5 summary element, the details element seems somewhat suited for drop down menu systems. It might not be the intended use of the details element, but if it works OK for it, then why not? They can be made into vertical or horizontal drop down menu systems.